Vrabel hired McMillan in 2021 as a defensive assistant where he primarily worked with Titans outside linebackers. In 2022, he worked as a defensive line assistant coach alongside Williams, who was named the Patriots defensive coordinator. McMillan continued to work with Titans defensive lineman in 2023.

With Mike Vrabel having spent a season with the Cleveland Browns, there was always going to be a risk he would poach an assistant or two at his next head coaching job.

Tennessee Titans star defensive tackle Jeffery Simmons commented on Terrell Williams landing the defensive coordinator position with the New England Patriots.

New England Patriots linebacker Ja’Whaun Bentley is fired up about the team hiring Terrell Williams as the new defensive coordinator. Bentley made his feelings known on social media. The Patriots fell into a slump on the defensive side of the ball under former coach