Michigan head coach Jim Harbaugh celebrates after their win in the national championship NCAA College Football Playoff game against Washington Monday, Jan. 8, 2024, in Houston. (AP Photo/Godofredo A. Vasquez)

Michigan head coach Jim Harbaugh stands on the field before the Rose Bowl CFP NCAA semifinal college football game against Alabama Monday, Jan. 1, 2024, in Pasadena, Calif. (AP Photo/Kyusung Gong)

Michigan head coach Jim Harbaugh smiles during an NCAA college football news conference Tuesday, Jan. 9, 2024, in Houston. Harbaugh and No. 1 Michigan completed a three-year climb to a national championship by beating No. 2 Washington 34-13 Monday night in the College Football Playoff title game.(AP Photo/Eric Gay)

Michigan quarterback J.J. McCarthy (9) celebrates with head coach Jim Harbaugh after the Rose Bowl CFP NCAA semifinal college football game against Alabama, Monday, Jan. 1, 2024, in Pasadena, Calif. Michigan defeated Alabama in overtime, 27-20. (Ryan Kang via AP)

Michigan running back Donovan Edwards celebrates after scoring with head coach Jim Harbaugh during the first half of the national championship NCAA College Football Playoff game against Washington Monday, Jan. 8, 2024, in Houston. (AP Photo/David J. Phillip)

Michigan head coach Jim Harbaugh gestures from the sideline during the first half in the Rose Bowl CFP NCAA semifinal college football game against Alabama, Monday, Jan. 1, 2024, in Pasadena, Calif. (AP Photo/Ryan Sun)

Michigan head coach Jim Harbaugh, left, speaks to wide receiver Darrius Clemons (0) during an NCAA college football practice Saturday, Dec. 30, 2023, in Inglewood, Calif. Michigan is scheduled to play against Alabama on New Year's Day in the Rose Bowl, a semifinal in the College Football Playoff. (AP Photo/Ryan Sun)

Michigan head coach Jim Harbaugh looks on from the sideline during the Rose Bowl CFP NCAA semifinal college football game against Alabama, Monday, Jan. 1, 2024, in Pasadena, Calif. Michigan defeated Alabama in overtime, 27-20. (Ryan Kang via AP)

Michigan coach Jim Harbaugh watches during warmups before an NCAA college football game against Michigan State, Saturday, Oct. 21, 2023, in East Lansing, Mich. (AP Photo/Al Goldis)

Michigan head coach Jim Harbaugh during the first half of the Fiesta Bowl NCAA college football semifinal playoff game against TCU, Saturday, Dec. 31, 2022, in Glendale, Arizona. (AP Photo/Rick Scuteri)

Michigan quarterback J.J. McCarthy (9) and head coach Jim Harbaugh talk in the second half of an NCAA college football game against Indiana in Ann Arbor, Mich., Saturday, Oct. 14, 2023. (AP Photo/Paul Sancya)

Michigan offensive coordinator Sherrone Moore, left, and head coach Jim Harbaugh watch against Indiana in the second half of an NCAA college football game in Ann Arbor, Mich., Saturday, Oct. 14, 2023. (AP Photo/Paul Sancya)

San Francisco 49ers head coach Jim Harbaugh smiles before an NFL football game against the Arizona Cardinals in Santa Clara, Calif., Sunday, Dec. 28, 2014. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers head coach Jim Harbaugh walks off the field after an NFL football game against the Arizona Cardinals in Santa Clara, Calif., Sunday, Dec. 28, 2014. (AP Photo/Marcio Jose Sanchez)

FILE - In this Nov. 27, 2014, file photo, San Francisco 49ers head coach Jim Harbaugh stands on the sideline during the fourth quarter of an NFL football game against the Seattle Seahawks in Santa Clara, Calif. Harbaugh was in discussions with Michigan to return to his alma mater as its new football coach, a person with knowledge of the talks said Monday, Dec. 29. The person spoke to The Associated Press on condition of anonymity because there was no announcement from the school or Harbaugh, who left the NFL team Sunday following its season finale. (AP Photo/Tony Avelar, File)

San Francisco 49ers head coach Jim Harbaugh, left, talks with Seattle Seahawks head coach Pete Carroll, right, on the field before an NFL football game, Sunday, Dec. 14, 2014, in Seattle. (AP Photo/Elaine Thompson)

FILE - In this Oct. 30, 2011, file photo, then-San Francisco 49ers head coach Jim Harbaugh listens as then-49ers wide receiver Braylon Edwards (17) talks in the fourth quarter of an NFL football game against the Cleveland Browns, in San Francisco. The war of words between Michigan coach Jim Harbaugh and former Wolverines receiver Braylon Edwards is heating up. Harbaugh, upset Edwards posted a negative tweet about two U-M players during Saturday's 24-17 loss at Notre Dame, fired back at Monday's, Sept. 4, 2018, news conference. Edwards, now a college football analyst, was suspended indefinitely Monday by the Big Ten Network for "a violation of the network's social media guidelines." (AP Photo/Marcio Jose Sanchez, File)