Michigan quarterback Denard Robinson, right, handles a ball alongside quarterback Devin Gardner, back, during warmups before an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. Robinson has missed the past two games with nerve damage in his elbow. (AP Photo/Tony Ding)

Michigan quarterback Denard Robinson warms up by throwing passes before an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. Robinson has missed the past two games with nerve damage in his elbow. (AP Photo/Tony Ding)

Michigan running back Vincent Smith (2) is stopped by Iowa linebacker Quinton Alston (52) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Denard Robinson (16) is upended by Iowa defensive back Nico Law (21) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Devin Gardner (12) pulls away from Iowa linebacker James Morris (44) for a touchdown during the second quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan running back Fitzgerald Toussaint (28) pulls away from Iowa defensive back Gavin Smith (35) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Devin Gardner (12) looks to throw a pass in the first quarter of an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)

Michigan head coach Brady Hoke,right, greets quarterback Denard Robinson during a pre-game ceremony for seniors before an NCAA college football game against Iowa at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Iowa quarterback James Vandenberg (16) throws during the first quarter of an NCAA college football game against Michigan at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Devin Gardner (12) celebrates a touchdown with running back Vincent Smith (2) during the second quarter of an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)

Michigan running back Thomas Rawls (38) avoids a tackle from Iowa cornerback Micah Hyde (18) and leaps over the goal line pylon in an attempt to score a touchdown in the second quarter of an NCAA college football game, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. Rawls was ruled out of bounds at the two-yard line. (AP Photo/Tony Ding)

Michigan running back Fitzgerald Toussaint (28) gets carted off the field by paramedics after getting injured in the first quarter of an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)

Michigan quarterback Denard Robinson (16) rushes in the first quarter of an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)

Michigan co-captains quarterback Denard Robinson (16) and safety Jordan Kovacs (11) walk off the field after playing their final home game in an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. Michigan won 42-17. (AP Photo/Tony Ding)

Michigan wide receiver Jeremy Gallon (10), defended by Iowa defensive back B.J. Lowery (19), catches a 31-yard pass for a first down during the third quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Denard Robinson (16) walks off the field after an NCAA college football game against Iowa, Saturday, Nov. 17, 2012, in Ann Arbor, Mich. Michigan won 42-17. (AP Photo/Tony Ding)

Michigan quarterback Devin Gardner (12) pulls away from Iowa defensive lineman Steve Bigach (54) during the third quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Devin Gardner (12) high-fives the fans enroute to the locker room after an NCAA college football game against Iowa at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Michigan quarterback Devin Gardner (12) passes during the third quarter of an NCAA college football game against Iowa at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. Gardner accounted for six touchdowns to help Michigan rout Iowa 42-17.(AP Photo/Carlos Osorio)

Michigan wide receiver Roy Roundtree (21) high-fives fans after an NCAA college football game against Iowa at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Iowa head coach Kirk Ferentz looks towards the scoreboard during the third quarter of an NCAA college football game against Michigan at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Iowa fullback Mark Weisman (45) breaks away from Michigan defensive end Craig Roh (88) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. Weisman, who had been out with a groin injury, ran for 63 yards on 16 carries and caught a 13-yard touchdown pass from James Vandenberg late in the game. (AP Photo/Carlos Osorio)

Michigan quarterback Denard Robinson (16) loses his shoe as he runs for a first down against Iowa defensive back Nico Law (21) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

FILE - In this Nov. 17, 2012, file photo, Michigan quarterback Denard Robinson, front, warms up beside fellow quarterback Devin Gardner before an NCAA college football game against Iowa in Ann Arbor, Mich. The biggest weapons in the arsenals of No. 20 Michigan and No. 4 Ohio State are undoubtedly their quarterbacks. (AP Photo/Tony Ding, File0

In a photo from Nov. 17, 2012, Michigan quarterback Denard Robinson (16) loses his shoe as he runs for a first down against Iowa defensive back Nico Law (21) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich. Robinson is going into his college finale without it being public knowledge which position he's going to play. It's perhaps a preview about his unclear future in football. The three-year starting quarterback might not throw for No. 19 Michigan against No. 11 South Carolina on New Year's Day at the Outback Bowl, but he probably will catch some passes. (AP Photo/Carlos Osorio, File)

FILE- In this Nov. 17, 2012, file photo, Michigan quarterback Devin Gardner throws a pass during an NCAA college football game against Iowa at Michigan Stadium in Ann Arbor, Mich. Gardner has avoided getting banged up in his first spring as a No. 1 quarterback. Coach Brady Hoke plans to keep it that way by putting him in an orange jersey, making him off-limits for hits when Michigan holds its last spring football practice on Saturday, April 13, 2013. (AP Photo/Carlos Osorio, FILE)