Don't be too quick, Michigan fans are starting to be less picky.
Remember 2007 when Harbaugh called out Michigan for using Professor VonKeepThemEligible and the fanbase revoked his "Michigan Man" card.
Flash forward to this week
"Michigan's going to have more access than SMU if they need to make a coaching change at the end of the season, but Harbaugh Hail Marys aside the landscape isn't going to look too different than this list of eight candidates to replace June Jones after his sudden resignation. It's heavy on offensive coordinators, with those of Ohio State, Clemson, Baylor, and Oklahoma on the list along with some washed up dudes. (Butch Davis! Rick Neuheisel!) Michigan has a bunch of midlevel head coaches they can grab… it's just that there aren't any."
And Harbaugh is a messiah again. If you lose a bunch of football games, anybody who you think will get you wins looks good, no matter what they have done in the past. Michigan fans would be ecstatic to get Jim Tressel, and the internet would be flooded with 10,000+ word essays on how the culture at Michigan would rehabilitate poor ole Jim who was just a product of his environment at Ohio State.