As mentioned previously, there is a chance that Delonte Hollowell could commit this weekend, he's been looking at the Wolverines for a long time now.
Also in the news today is that Florida commit Demar Dorsey will be taking an official to Michigan this weekend. Dorsey is a four star safety prospect with lightning speed, running a 4.35 forty time. He showed off his skills at the Under Armor AA game, where he had an interception. ESPN has him as the #12 prospect in the entire country, but the only the 3rd best safety committed to the Gators, behind Matt Elam and Johnathan Dowling.
He was scheduled to visit Tennessee this weekend, but the coaching situation there obviously changed things. With Florida already having two elite safeties in the class, and Urban Meyer's future unclear, perhaps Michigan has a shot at Dorsey, assuming the visit goes well this weekend.