ESPN has a list of the nations top 10 frontcourts.
Michigan has one of the best rebounders in the country in Mitch McGary. He grabs a rebound every two and a half minutes. he X factor for Michigan is
Glenn Robinson III. Although the plan is to play the 6-foot-7 Robinson at the small forward position, I would not be surprised to see him play some 4. He is an excellent rebounder and has the length and athleticism to match up with most power forwards. The Michigan system is built on attacking matchups, and Robinson at the 4 is a difficult matchup in both ball screens and in isolations on ball reversal.
While I understand that GRIII wants to play his more natural position, SF, I think it's going to be hard to keep Irvin off the floor and it'd be in our best interest to play GRIII at PF.