When Vrabel was named Titans head coach in 2018, he hired Williams to coach the defensive line, and by 2023 named him assistant head coach and had him serve as head coach of the team's preseason opener. Vrabel cited Williams' ability to "reach every player" across the roster -- including offense.

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 Jerod Mayo and defensive coordinator DeMarcus Covington.

Tennessee Titans star defensive tackle Jeffery Simmons commented on Terrell Williams landing the defensive coordinator position with the New England Patriots. Simmons had some of his best seasons under Williams.