If he is likely to offer any mentoring value, i'd be happy to have him.
But that is just me. I still think he is a consummate pitcher. I enjoyed watching him in game 7 against the Nationals almost 2 years ago, where there was none of this "i'm hiding my grip in my glove as that could indicate what i am throwing." He used the same grip on every pitch.
Anyway, we'll see soon enough where he goes...