Michigan Former Michigan Coach Greg Mattison Set To Retire Published January 22, 2021 After two seasons in Columbus before several in Ann Arbor, former DC and DL coach Greg Mattison is set to retire: Ohio State co-defensive coordinator Greg Mattison is retiring, Ryan Day just announced. pic.twitter.com/iHqyU5erNX — Tom VanHaaren (@TomVH) January 22, 2021 In this article: Recent Posts Former Top Michigan Recruit Announces Transfer To A B1G Rival Here Are The Teams Most Likely To Land Former UGA QB Carson Beck Michigan Picks Up Transfer Specialist From B1G Program Michigan Captain Has Interesting ‘Head Shaking’ Social Media Post Former Five-Star Alabama Player Expected To Transfer To B1G Program