Per NFL.com:
The Baltimore Ravens expect defensive coordinator Greg Mattison to leave the team and take the same position at the University of Michigan, a team source said Tuesday.
This is a very good hire and should carry a ton of weight with recruits. Can you imagine walking into a high school LB's or Safeties home and telling him he that he coached Ray Lewis and Ed Reed? That might make an impact.
Update: He is coming to Michigan!