He was definitely playing with a bad ankle/leg that really limited his ability to pass rush in the second half of the season. But, he still plays the run well and I think if he is in a rotation he can still be effective as a pass rusher once he heals. They have also used him inside in the pass rush package and they may do that more next year.
He's clearly never going to be the player he was a few years ago. But, it's not like we have a lot of DE talent being held back behind him.