If he is reasonable, we should consider it. Especially if we really are considering a 6 man rotation. Sign him and one of the big guys (Lester) and McCarthy and go with a six man rotation. Then trade away some of the younger guys if they get proper value.
Tanaka, Lester, CC, Pineda, McCarthy, This Guy is a good 6. Phelps in the pen, then you have in AAA Greene, Mitchell, Banuelos, Whitley, and Nova coming back mid year. With that depth, if they get back good value, you can even trade Greene and Phelps, and if you can always scale back to 5 by midyear if necessary (because of health or you trade someone, say Pineda for a bat).
Time to double down on the 'Spects!