Here is an accounting of ex-Michigan players who transferred, failed to qualify, or decommitted from the Wolverines.  The information is accurate to my knowledge, but any updates or corrections are welcome.

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Class of 2015

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Decommits (8): George Campbell, Jr. – WR – Tarpon Springs (FL) East Lake, Chris Clark – TE – Avon (CT) Old Farms, Shaun Crawford – CB – Lakewood (OH) St. Edward’s, Damien Harris – RB – Berea (KY) Madison Southern, Darrin Kirkland, Jr. – LB – Indianapolis (IN) Lawrence Central, Darian Roseboro – DE – Lincolnton (NC) Lincolnton, Garrett Taylor – CB – Richmond (VA) St. Christopher’s, Michael Weber – RB – Detroit (MI) Cass Tech
Transfers (5): Brian Cole – S – Saginaw (MI) Heritage, Nolan Ulizio – OT – West Chester (OH) Lakota West, Keith Washington – CB – Prattville (AL) Prattville, Tyrone Wheatley, Jr. – TE – Buffalo (NY) Canisius

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Class of 2014 (LINK)

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Decommits (1): Denzel Ward – OT – Bradenton (FL) IMG Academy
Transfers (6): Ian Bunting – TE – Hinsdale (IL) Central, Freddy Canteen – WR – Elkton (MD) Eastern Christian, Michael Ferns III – LB – St. Clairsville (OH) St. Clairsville, Drake Harris – WR – Grand Rapids (MI) Christian, Wilton Speight – QB – Richmond (VA) Benedictine, Maurice Ways – WR – Detroit (MI) Country Day

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Class of 2013 (LINK)

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Decommits (1): Gareon Conley – CB – Massillon (OH) Washington
Retirees (5): Reon Dawson – CB – Trotwood (OH) Trotwood-Madison, Jaron Dukes – WR – Columbus (OH) Marion Franklin, Chris Fox – OT – Parker (CO) Ponderosa, Da’mario Jones – WR – Westland (MI) John Glenn, Csont’e York – WR – Highland Park (MI) Chandler Academy
Transfers (9): Kyle Bosch – OG – Wheaton (IL) St. Francis, David Dawson – OG – Detroit (MI) Cass Tech, Derrick Green – RB – Richmond (VA) Hermitage, Shane Morris – QB – Warren (MI) De La Salle, Dan Samuelson – OG – Plymouth (MI) Plymouth, Wyatt Shallman – RB – Novi (MI) Catholic Central, Scott Sypniewski – LS – Ottawa (IL) Ottawa, Ross Taylor-Douglas – CB – Avon (OH) Avon, Logan Tuley-Tillman – OT – Peoria (IL) Manual

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Class of 2012 (LINK)

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Decommits (3): Pharaoh Brown – TE – Lyndhurst (OH) Brush, Caleb Stacey – C – Cincinnati (OH) Oak Hills, Anthony Standifer – CB – Crete (IL) Crete-Monee
Transfers (3): Dennis Norfleet – RB – Detroit (MI) King, Kaleb Ringer – LB – Clayton (OH) Northmont, Tom Strobel – DE – Mentor (OH) Mentor

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Class of 2011

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Chris Barnett – Tight end – Hurst (TX) L.D. Bell
Barnett was an outstanding tight end coming out of high school.  He tore his ACL during his senior year and struggled to regain his playing shape.  When he arrived at Michigan in the summer of 2011 for his freshman season, he weighed 278 lbs.  By late August the distance from home, the summer classwork, and the required physical conditioning forced him to leave the program and re-evaluate his options.  He enrolled at a Texas JC, but has since left that program.
Current status: Unknown

Russell Bellomy – Quarterback – Arlington (TX) Martin
Current status: Out of football

Greg Brown – Cornerback – Fremont (OH) Ross
Brown was the first commitment of the 2011 class after choosing the Wolverines in September of 2009.  He enrolled early in January 2011, but was one of those kids who was caught in the middle between Rich Rodriguez and Brady Hoke.  Rodriguez recruited him, but he wasn’t fired until January, when Brown was already on campus.  The cornerback received mixed reviews in spring practices and played sparingly on special teams at the beginning of the 2011 season, but decided to transfer mid-season.  He played sparingly for Findlay in 2012, then transferred to Iowa Central prior to the 2013 season.
Current status: Out of football

Tamani Carter – Safety – Pickerington (OH) Central
Carter was the first player to commit to Brady Hoke after Hoke was hired in January 2011.  He redshirted as a true freshman and was suspended for part of spring practices in 2012 for a minor legal tiff, along with safety Josh Furman.  Carter left the team prior to fall 2012.
Current status: Out of football

Shawn Conway – Wide receiver – Birmingham (MI) Seaholm
Conway committed to Michigan in the spring of 2010.  However, it became clear that he would not qualify academically to be admitted to Michigan, so he attended Butte College in Chico, CA.  As a freshman he had 28 receptions and 7 touchdowns.
Current status: Out of football

Dallas Crawford – Cornerback – South Fort Myers (FL) South Forty Myers
Crawford was a stellar high school quarterback and safety that Rich Rodriguez and his staff recruited successfully.  Crawford committed to Michigan and the hope was that he could help recruit his high school teammate, star receiver Sammy Watkins.  But when the coaching staff was fired in early January, Crawford got cold feet and signed on to play for Miami, his childhood favorite.  Crawford redshirted as a freshman in 2011 and won the Scout Team Player of the Year for Defense. As a redshirt freshman in 2012, he played running back, ran 6 times for 23 yards, and went 1/2 passing for 29 yards. In 2013 he carried the ball 137 times for 558 yards and 12 touchdowns, plus he caught 20 passes for 171 yards and 1 touchdown. In the spring of 2014 he switched to safety.
Current status: Finished college career at Miami

Jake Fisher – Offensive tackle – Traverse City (MI) West
Fisher was a 6’7″, 260 lb. tight end in high school who was clearly headed for offensive tackle.  He was athletic and a good blocker.  Fisher committed to Michigan in summer 2010.  But when Rich Rodriguez was fired in January, Fisher started looking at other schools, unsure of whether he would fit in with new coach Brady Hoke’s offensive system.  Despite several visits from Michigan coaches, Fisher chose the Oregon Ducks on National Signing Day.  Fisher played as a backup offensive tackle and guard in 13 games as a freshman, and was a starter for Oregon in his sophomore and junior seasons.
Current status: Finished college career at Oregon

Matt Goudis – Kicker – West Hills (CA) Chaminade-Madonna
Goudis was offered by the Wolverines to shore up their kicking game, even though Michigan already had two scholarship kickers (Brendan Gibbons, Will Hagerup) on the roster.  Goudis flipped from being a Boise State commitment to a Wolverine.  Rumor has it that Goudis was expecting Stanford coach Jim Harbaugh to get the Michigan job, so when Brady Hoke was hired, Goudis changed his commitment again and became a Miami Hurricane.  He redshirted as a freshman in 2011 and sat on the bench in 2012. As a redshirt sophomore in 2013, he was 13/17 on field goals and 57/57 on extra points.
Current status: Finished college career at Miami

Justice Hayes – Running back – Grand Blanc (MI) Grand Blanc
Current status: Out of football

Kellen Jones – Linebacker – Houston (TX) St. Pius X
Jones was a solid recruit and seemed like a solid student and individual.  Throughout the coaching change from Rich Rodriguez to Brady Hoke, he stayed pretty strongly committed to the Wolverines.  He enrolled at the University of Michigan in June, but left the school in July for undisclosed reasons.  After transferring to Oklahoma, Jones played mostly special teams and made 9 total tackles as a true freshman in 2011.  When his freshman season ended, he decided to transfer again, this time to Clemson.
Current status: Out of football

Tony Posada – Offensive guard – Tampa (FL) Plant
Posada committed to Rich Rodriguez and stuck with the program through the hiring of Brady Hoke in January.  However, he arrived in Ann Arbor weighing 340 lbs. and was vastly out of shape.  His departure was announced on August 22, only a couple weeks into his freshman season.
Current status: Out of football

Thomas Rawls – Running back – Flint (MI) Northern

Chris Rock – Defensive end – Columbus (OH) DeSales
Posada committed to Rich Rodriguez and stuck with the program through the hiring of Brady Hoke.  He redshirted as a true freshman in 2011 but departed in May 2012. Rock reappeared as a walk-on defensive tackle at Ohio State for the 2013 season but played in just one game.
Current status: Out of football

Kevin Sousa – Quarterback – Orlando (FL) Lake Nona
Sousa was somewhat lightly recruited early in his career.  Having played soccer as a kid, Sousa first took up football as a sophomore in high school.  Furthermore, he was part of a fledgling program at Lake Nona High School, whose team performed poorly in its first seasons.  Sousa committed to Michigan in June 2010, but Michigan’s coaches – under Rich Rodriguez – continued to recruit other quarterbacks, despite telling Sousa that he was their guy.  Sousa decommitted from Michigan and chose Wake Forest instead.  He redshirted as a freshman in 2011 and was a backup in 2012 before converting to wide receiver in 2013. He transitioned back to quarterback in 2014, but then he was arrested for drunk driving and suspended indefinitely, which ended his career.
Current status: Out of football

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Class of 2010

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Richard Ash – Defensive tackle – Pahokee (FL) Pahokee

Cullen Christian – Cornerback – Pittsburgh (PA) Penn Hills
Christian pegged Michigan as his leader throughout much of the recruiting process, but it wasn’t until November 2009 that he finally pulled the trigger publicly.  He was expected to compete for playing time in a depleted secondary, but found himself buried behind much less heralded recruits for his entire freshman year.  He played in 10 games as a freshman and made only 6 tackles.  After Rich Rodriguez was fired in favor of Brady Hoke, Christian gave it a go through spring practices.  Ultimately, he did not like his place on the depth chart and asked for his scholarship release papers on April 22, 2011. He transferred to Pitt and sat out the 2011 season due to transfer rules.
Current status: Expected to start at cornerback for Pitt this fall

Demar Dorsey – Cornerback – Lauderdale Lakes (FL) Boyd Anderson
Dorsey committed to Michigan on National Signing Day, but was released from his Letter of Intent when Michigan’s admissions department denied him entry.  Dorsey played the 2011 season at Grand Rapids Community College, whose program was dismantled after the season was finished.  Dorsey announced that he would transfer to Hawaii in May 2012 but does not appear on their fall roster.
Current status: Unknown

Tony Drake – Wide receiver – Dallas (TX) Skyline
Drake committed to Michigan in March 2009 and looked like Michigan’s next tiny slot receiver.  However, the Wolverines stopped recruiting him (a tactic thought to be grade related) and he switched his commitment to Colorado State in January 2010, shortly before National Signing Day.  Drake played as a true freshman in 2010 at both WR and RB.  He had 6 receptions for 71 yards to go along with 7 rushing attempts for 89 yards and 1 touchdown.  He also averaged 24.3 yards an attempt on 29 kickoff returns.  Prior to the 2011 season, he was declared academically ineligible.
Current status: Academically ineligible to play at CSU

Josh Furman – Safety – Millersville (MD) Old Mill

Stephen Hopkins – Running back – Flower Mound (TX) Marcus
He left Michigan’s football team after the 2012 season but received his degree before transferring to Tennessee State University. As a fifth year senior in 2014, he started five games at fullback and carried the ball 51 times for 222 yards and 1 touchdown, along with 3 catches for 22 yards.

Carvin Johnson – Safety – Metairie (LA) Rummel
Johnson committed to Michigan in late 2009 and arrived on campus in summer 2010.  He immediately earned a starting job at the hybrid safety/outside linebacker position . . . and immediately got injured.  He started 3 games in 2010, picking up 18 tackles, 2.5 tackles for loss, 1 sack, and 1 pass breakup.  Relegated to a backup safety role in 2011, Johnson made 6 tackles, 1 pass breakup, and 1 fumble recovery in the first half of the season.  However, he decided to transfer to Hampton after the midway part of the season.
Current status: Unknown

Conelius Jones – Quarterback/athlete – Spartanburg (SC) Spartanburg
Jones committed to Michigan after the Wolverines were the first team to offer him.  Due to some personal issues, Jones was a late bloomer on the football field.  He committed to Michigan to play quarterback, but with the ability to play QB, WR, or DB, he said he would play wherever Michigan wanted him.  However, he failed to qualify on time, and then dropped out of the prep school that was supposed to prepare him for enrollment at Michigan in January 2010.  He then enrolled at Marshall but has since left that school as well.
Current status: Unknown

Antonio Kinard – Linebacker – Youngstown (OH) Liberty
Kinard was an early commitment to Michigan as a tweener DE/OLB prospect.  However, he failed to qualify for admission to Michigan.  He enrolled at Hargrave Military Academy in an effort to academically qualify and signed a National Letter of Intent to play for Miami as part of the Class of 2011.
Current status: Signed to play for Western Arizona Junior College

Ricardo Miller – Wide receiver – Ann Arbor (MI) Pioneer
Originally from Orlando (FL) Dr. Phillips, Miller was an early commitment to Michigan as a wide receiver. He moved to Michigan for his senior year and joined the football team upon graduation, but he could never find a spot to contribute. He bounced from wide receiver to H-back and back to wideout, but none of the positions stuck. He left the football team after his third year in the program, graduated from Michigan, and transferred to UMass.
Current status: Will enter fall camp with UMass

Christian Pace – Center – Avon Lake (OH) Avon Lake
Pace committed to Michigan in the spring of 2009 and looked like a solid upcoming replacement for upperclassman David Molk.  However, during his freshman season, he suffered a shoulder injury that caused him prolonged problems.  There were rumors that his injury would be career-ending, but he participated in spring practices, playing mostly as a backup guard.  In the summer of 2011, though, he received a medical scholarship and left the program.
Current status: Taking classes at U of M

Jerald Robinson – Wide receiver – Canton (OH) South
Robinson committed to Michigan in February 2009.  He was destined to be a slow-ish possession receiver, but standing in his way were some work ethic issues that made him have to “earn his wings” from Rich Rodriguez as a freshman.  He redshirted in 2010, played sparingly in 2011, and then worked his way into the rotation at the beginning of the 2012 season.  He made 5 catches for 69 yards before deciding to leave the team mid-season.
Current status: Unknown

Marvin Robinson – Safety – Eagle Lake (FL) Lake Region

Davion Rogers – Linebacker/defensive end – Warren (OH) Harding
Rogers committed to Michigan late in the recruiting process, earning an offer from the Wolverines in the weeks leading up to Signing Day.  He was, however, an academic risk and rumored to be a potential casualty by the time fall rolled around.  Rogers showed up on campus and participated in fall practices, but disappeared from the program in September 2010.  Rogers transferred to Youngstown State University for 2011 and made 45 tackles, 6.5 tackles for loss, 2 sacks, 1 interception (returned 27 yards for a touchdown), and 5 pass breakups while also blocking 2 kicks.  He left YSU’s program after the 2011 season.
Current status: Unknown

Terry Talbott – Defensive tackle – Huber Heights (OH) Wayne
Talbott, along with his younger brother Terrence (a cornerback), committed to Rich Rodriguez in August of 2009.  Terry was an undersized defensive tackle at less than 250 pounds and sat through an obviously necessary redshirt year.  In the spring of 2010, it was revealed that he was suffering from back issues that caused him to sit out spring practices.  Those troubles persisted and he left the program in July 2011 before his redshirt freshman year.
Current status: Unknown

Ray Vinopal – Safety – Youngstown (OH) Cardinal Mooney
Vinopal committed to Michigan on the same day his Cardinal Mooney high school team won their state championship.  As a true freshman in 2010, he earned the starting free safety job halfway through the season.  He ended the year with 33 tackles, 1.5 tackles for loss, 1 interception, and 3 pass breakups.  However, he left the team in the offseason due to undisclosed personal reasons and transferred to Pitt, where he sat out the 2011 season due to NCAA transfer rules.
Current status: Expected to start at safety in 2012

Austin White – Running back – Livonia (MI) Stevenson
White committed to Michigan fairly early on in the process, bucking the family trend that sent his brothers to Michigan State.  Rumors were rampant upon his recruitment that he was a bit of a prima donna in high school and had personality clashes with school personnel at Stevenson High School.  He enrolled early in January 2010, but was seemingly “encouraged” to leave the program during August practices prior to his freshman season.  White enrolled at Central Michigan University in January 2010 and joined the football program, where he sat out the 2011 season.  White was kicked off the team in spring 2012 before ever playing a down of football. He then ended up at Western Iowa Community College, where had 460 rushing yards and 3 touchdowns in 2013. He transferred to D-II Fairmont State in West Virginia, where in 2014 White had 128 carries for 399 yards and 4 touchdowns, and he had 9 catches for 46 yards.
Current status: Listed as a senior running back for 2015

D.J. Williamson – Wide receiver – Warren (OH) Harding
Williamson committed to Michigan in March 2009 when, according to Rivals, he had no other offers.  Known as a kid with good speed and not much else, he seemed to be a bit of a reach that early.  He redshirted as a freshman in 2010 and did not play much in spring 2011.  He left Michigan after winter semester.
Current status: Unknown

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Class of 2009 (LINK)

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Decommits (7): Shavodrick Beaver – QB – Wichita Falls (TX) Rider, Anthony Fera – K/P – Cypress (TX) St. Pius X, Pearlie Graves – DT – Tulsa (OK) East Central, DeQuinta Jones – DT – Bastrop (LA) Bastrop, Bryce McNeal – WR – Minneapolis (MN) Breck, Kevin Newsome – QB – Portsmouth (VA) Western Branch, Dewayne Peace – WR – Grand Prairie (TX) South
Non-qualifiers (1): Adrian Witty – CB – Deerfield Beach (FL) Deerfield Beach
Transfers/retirees (8): Isaiah Bell – LB – Youngstown (OH) Liberty, Vladimir Emilien – S – Lauderhill (FL) Plantation, Tate Forcier – QB – San Diego (CA) Scripps Ranch, Mike Jones – LB – Orlando (FL) Edgewater, Teric Jones – RB – Detroit (MI) Cass Tech, Anthony Lalota – DE – Princeton (NJ) Hun School, Je’Ron Stokes – WR – Philadelphia (PA) Northeast, Justin Turner – CB – Massillon (OH) Washington

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Class of 2008 (LINK)

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Decommits (2): John Wienke – QB – Tuscola (IA) Tuscola, Christian Wilson – FB/LB – McKees Rocks (PA) Montour
Transfers/retirees (9): Boubacar Cissoko – CB – Detroit (MI) Cass Tech, Justin Feagin – QB – Deerfield Beach (FL) American Heritage, Taylor Hill – LB – Youngstown (OH) Cardinal Mooney, Sam McGuffie – RB – Cypress (TX) Cy-Fair, Dann O’Neill – OT – Grand Haven (MI) Grand Haven, Brandon Smith – LB/S – New Brunswick (NJ) New Brunswick, Darryl Stonum – WR – Sugar Land (TX) Dulles, Kurt Wermers – OG – Crown Point (IN) Crown Point, Marcus Witherspoon – LB – Absecon (NJ) Holy Spirit

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Class of 2007 (LINK)

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Decommits (1): Jerimy Finch – S – Indianapolis (IN) Warren Central
Transfers/retirees (7): Zion Babb – WR/CB – Alhambra (CA) Alhambra, Artis Chambers – S/LB – Fort Wayne (IN) Snider, Toney Clemons – WR – New Kensington (PA) Valley, Marell Evans – LB – Richmond (VA) Varina, Vince Helmuth – FB/DT – Saline (MI) Saline, Avery Horn – RB – Hanford (CA) Hanford, Ryan Mallett – QB – Texarkana (TX) Texarkana

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Class of 2006 (LINK)

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Decommits (0): N/A
Transfers/retirees (6): Justin Boren – OG – Pickerington (OH) North, Jason Kates – DT – Harrisburg (PA) Bishop McDevit, Cobrani Mixon – LB – Cincinnati (OH) Colerain, Quintin Patilla – LB – Flint (MI) Carman-Ainsworth, Quintin Woods – DE – Flint (MI) Southwestern, Bryan Wright – K – Salem (OH) Salem

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Class of 2005 (LINK)

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Decommits (0): N/A
Transfers/retirees (6): Jason Forcier – QB – San Diego (CA) St. Augustine, Eugene Germany – DE – Pomona (CA) Pomona, James McKinney – DT – Louisville (KY) Central, Chris Richards – CB – Quartz Hills (CA) James Monroe, Johnny Sears – CB – Fresno (CA) Edison, Mister Simpson – RB – Cincinnati (OH) Colerain, Marques Slocum – DT – Philadelphia (PA) West Catholic

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Class of 2003

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Decommits (0): N/A
Transfers/retirees (6): Ryan Mundy – S – Pittsburgh (PA) Woodland Hills, Will Paul – TE – Chesterfield (MO) Parkway West, Jim Presley – LB – Milford (MI) Milford, Clayton Richard – QB – Lafayette (IN) McCutcheon, Pat Sharrow – C – Monroe (MI) Monroe, Jeff Zuttah – OG – Princeton (NJ) Hun

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Class of 2002

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Decommits (0): N/A
Transfers/retirees (7): Tom Berishaj – OG – Sterling Heights (MI) Stevenson, Greg Cooper – CB – Flint (MI) Northern, Matt Gutierrez – QB – Concord (CA) De La Salle, Larry Harrison – DT – Detroit (MI) King, Quinton McCoy – CB – Chandler (AZ) Valley Christian, Kevin Murphy – TE – Grand Rapids (MI) Forest Hills Central, Pierre Rembert – RB – Milkwaukee (WI) Cudahy