I really think Blatche stays, even if it's for another minimum deal. He seems to love it here, and honestly, I think he still might have a bad reputation around the league. That being said, I can see a stupid team that's desperate for any solid player, like the Bobcats, offer him something like $8 million per year.
Per year salary is essentially meaningless. It's all about length of contract. And don't read anything into "he loves it here," or "he wants revenge on the Wizards," because once he sits down with his agent and he is told that he can either take the risk of playing on a one year deal and possibly lose millions (if things don't go well) just to get the Wizards back or he can take financial security, he will go for the money and security.