Is there anything suggesting that hitters of his type fall off early? I think his body is just breaking down. He's a huge guy, and has dealt with stress fractures in his feet, and his power has fallen off a cliff since he was diagnosed last year.
I legit don't think they'd move him for any prospect at this point. Winning a WS matters more than anything else, and it's hard to see a scenario where the probability of that happening this year doesn't drop with a Greinke trade.
It goes a bit beyond that. Cito pretty much single-handedly drove Shaun Green and John Olreud out of town because they didn't hit the way he wanted them to. Guy was a giant *******, and his ego was f***ing huge.