I can see how as a Red Sox fan you might have missed his good outings last year
Very much worth holding onto this year. While not proven on a full season as a starter, he is a superb power pitcher on a team with a top offense. He could win 15-16 with a whip and era similar to last year, which obviously would be a great season. Don't know who's available in your league but believe me, he'll be worth a bench spot and then some.