Indiana jokingly wishes Jim Harbaugh happy birthday

For those who don’t know, Michigan head coach Jim Harbaugh is related by marriage to Indiana head basketball coach Tom Crean. Harbaugh’s sister, Joani, is married to Crean, making the two brothers-in-law.

When Harbaugh was still coaching the San Francisco 49ers, he joined the Hoosiers for a game and he served as “manager” for the team. He brought out and set up chairs for his brother-in-law’s team.

Harbaugh turned 52 on Wednesday and the Hoosiers shouted him out on Instagram, jokingly calling him a former Hoosier manager.

Wishing a happy birthday to former #iubb manager @coachjim4um!

A photo posted by Indiana Men’s Basketball (@indianambb) on Dec 23, 2015 at 11:44am PST

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Of course, since Harbaugh coaches at a rival Big Ten school, Hoosier fans were not happy about them giving him a shout out, no matter how tounge-in-cheek it may have been.

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What do you think Hoosier fans? Was this all in good fun or is it inappropriate?

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*Featured Photo (above) credit to USA TODAY Sports