ESPN was just taking about how the Suns are going to have trouble keeping Butler from going somewhere else. He has the option of leaving if he wants to but it's going to come down to how much $ is enough for him. I think when the time comes for him to explore leaving we will have a very good shot. Having a player pass up $ isn't unheard of and Gordon Heyward did just that for a lot of $.
No one has passed up a max extension after their rookie deal expired.