Sherrone has to try to rebuild his defensive staff as Jimmy and his $45M+ over the salary cap LA Chargers has hired away the entire defensive side of the ball. Michigan has 1 defensive coach listed on Mgoblue and its Coach Clink. So officially, Michigan has ZERO defensive coaches. Wink has not been officially hired as he needs to go through background checks, etc. (please have a red flag in the background check, please have a red flag).
It seems Sherrone has hired Greg Scruggs who Coach Sherrone knew at Louisville. Greg has coached at Cincinnati, NY Jets, and Wisconsin.