He's a classic buy-low opportunity right now.
He'll about the same as he's been in the past, he'll put up over 200 Ks, and grab a few undeserved wins when the Cubs offense starts firing on all cylinders. And he'll pitch a 3 or 4 gems over the course of a season.
You gotta remember he's only 25, but already has 5 full seasons under his belt. One of these years, he's going to put as much brain into his pitching as emotion, and well, watch out.