They should try to trade him and Igawa in the offseason to NL teams. The rotation can be: Hughes, Wang, Chamberlain, Kennedy and Pettitte.
barring health issues that rotation would be sick. i think mariano has up to 2 more solid years left, i think edwar ramirez would be a decent set-up guy for mo until he starts to fade.
Time You Enjoy Wasting, was not wasted - John Lennon
A man who nevers spends time with his family can never be a real man - Don Vito Corleone