If Sarver and the Suns organization are to part with Amar'e Stoudemire, I'd recommend David Lee.
20.2 ppg and 11.7 rpg (rebounding numbers are far better than Amar'e could ever have) and I believe he can thrive on the Suns often High-Octane offense as he is thriving under D'Antoni's system in New York.
Good catch for the Suns if they land him. He can run and rebound.