While the Patriots requested permission, the Dolphins can only block assistants from interviewing for lateral positions. As a defensive coordinator appointment would be a promotion for Crow, Miami has no choice but to grant the request.

The Dolphins’ outside linebackers coach was previously under Mike Vrabel on the Tennessee Titans’ coaching staff.

Welker is a former Patriots legend who served in the role under Mike McDaniel for three seasons. He worked with an explosive receiving duo in Tyreek Hill and Jaylen Waddle during his time with the team. However, after another disappointing end to a season, the Dolphins thought it was best to move in a different direction.