We know who will replace Johnson and Glenn. But what are some of the toughest challenges/questions ahead for new coordinators Morton and Sheppard?

The Lions are promoted linebackers coach Kelvin Sheppard to defensive coordinator. Sheppard, 37, joined Dan Campbell’s initial Lions staff as outside linebackers coach in 2021 and has overseen the entire unit the past three seasons.

The Detroit Lions appear to be preparing for the loss of pass game coordinator Tanner Engstrand, who is the lead candidate to become the New York Jets’ next offensive coordinator. According to NFL Network’s Tom Pelissero,