Not only that, but is Amare really that much of an upgrade over David Lee? I would say, most certainly not. David Lee averaged 20/12 and 4 assists last season, that's pretty damn good. Amare might be a better scorer, but he isn't the rebounder that Lee is, and certainly isn't the passer that Lee is, and he's just as bad defensively. And the biggest negative in my eyes is toney douglas isn't 1/10th the PG that Nash is, and won't get Stoudemire the easy looks that Nash did.
So if they offered Ariza, Hou/Knicks 1st, and filler (Jeffries, Hill, or Taylor most likely), you'd have to consider it, especially if Iggy/Turner don't work out. That extra cap room could give us the room to go after a Noah, Gasol, Perkins, Oden, Nene, etc. as well.