I'm sure you have heard by now that FL OT Kai-Leon Herbert has de-committed from the Wolverines. This wasn't a surprise as Kai-Leon had been dating other schools for some time now. He is most likely going to stay close to home and attend a Florida school.
That leaves Michigan with the following commits on the offensive line: Chuck Filiaga, JaRaymond Hall, Joel Honigford, and Andrew Stueber. Which in normal years would seem like plenty of recruits. This is a unique year for the offensive line recruiting and Michigan probably needs/prefers to have two more prospects and probably tackle prospects.