Johnson is entering his 5th year but I don't know his contract status. He was the second overall pick in 2007 so I'm guessing he got a 5 or 6 year deal. I don't think that it makes much difference though Dags. Detroit will franchise him in a heartbeat if they can't sign him to an extension when his rookie deal is up. Unless he gets injured and his production falls way off I don't think he'll see FA any time soon.