In this Nov. 25, 2017, file photo, Michigan coach Jim Harbaugh watches players warm up for an NCAA college football game against Ohio State in Ann Arbor, Mich. (AP Photo/Carlos Osorio, File)
In this Nov. 25, 2017, file photo, Michigan coach Jim Harbaugh watches players warm up for an NCAA college football game against Ohio State in Ann Arbor, Mich. (AP Photo/Carlos Osorio, File)