I would pitch Harvey until his arm falls off next year and then trade him to a contender at the deadline.
He's under control for 2 more seasons, no? No reason to unload him in the off season.
I'm also curious how his arm responds over the off season. There's no doubt he's a me guy, but that doesn't mean he can't settle into the rotation.
Also, Fatty Francessa thinks the Met's throw about $65-80MM for 5 years at him this off season and put him into the position of having to turn that down. He's still making peanuts the next two years. He could sign for life changing money and skip arbitration, etc. The thought being that with one Tommy John under his belt already, Harvey takes the money now and avoids putting himself in the position of risking getting hurt. If he stays healthy, he'll sign his $20MM a year contract later. If he gets hurt again, he has $75MM guaranteed.
But I would have no problem trading him, in theory, cause I think he has done just about everything wrong from a personality standpoint the last half of the year.