The Dolphins have only one above average defensive lineman under contract, in Zach Sieler. They have a nose tackle, Benito Jones, who has consistently graded out among the worst in the league. Their only two other defensive linemen under contract are journeymen Matt Dickerson and Neil Farrell.

ESPN sources: Six-time Pro-Bowl defensive lineman Calais Campbell is finalizing a one-year deal to return to the Arizona Cardinals. Campbell was the Cardinals’ 2008 second-round pick, played in Arizona until 2016, and now will return there for his 18th NFL season. pic.twitter.com/eBoNmgR2xC

Love for football and ability to stay healthy have helped Arizona Cardinals D-lineman Calais Campbell remain an impact player after 17 NFL seasons.