We know who won't be coaching Michigan next year; Jim Harbaugh stays in the Bay Area, taking $5m per to coach the 49ers.
Here's another guy who won't be in the Big House next year unless it's as a color commentator; Mike Leach. He coached Text-us Tech's until last year, bringing down the ire of the NCAA. Bad habits tend to follow you from stop to stop; see RichRod and Kevin Samson. Leach might be a good Xs and Os guy who ran a spread-style offence, but there was a reason the powers that be in Lubbock ran him off a year ago.
Everyone seems to have their list; Mike Stoops at Arizona is one mentioned by the local sports talkers. He's not a Michigan Man®, but he might be the best available option. If Les Miles wants to come north to his alma mater, this might be the time to do so, but it is a lateral move for him.