The Detroit Lions are promoting linebackers coach Kelvin Sheppard to defensive coordinator, replacing Aaron Glenn, who left to become the New York Jets

Detroit's defensive coordinator was previously Glenn, who had held down the fort at this spot since 2021. Glenn left to take the New York Jets head coach opening, and it was a return to his roots, as Glenn spent eight seasons of his playing career with the Jets.

Detroit has promoted former linebackers coach Kelvin Sheppard to replace Aaron Glenn in the vacant coaching role, a source confirmed to ESPN's Jeremy Fowler.