Michigan currently has three offensive lineman committed, and could well pick up one more this weekend if Kyle Kalis does indeed pull the trigger. Then they have long time UM lean Jordan Diamond, who should be deciding towards the end of summer/early fall. This would give them five quality guys, but the way they are going, it looks like they'll be taking a 6th.
Andrus Peat is still an option as the 6th guy, but his decision could take a while, then we have other top guys like Joshua Garnett and Zach Banner. Another prospect who is high on Michigan is Blake Bars, and he's set to announce his decision sometime in the next week. Bars was assumed to be a Penn State lean for a while, but recently it looks like he could be leaning towards the Wolverines.
So that's yet another potential commitment in the next week or so!