Powe's agent is asking for two year with the second year at Powe's option so he can opt out and become an unrestricted free agent without Bird or Early Bird rights being held by the team that signs him.
So Powe is injured and as much as prognostications say he might be back for late February, it is more likely, given the scope of his injuries, that he will not be the Leon Powe that has been so effective for Boston for well over a year. So Leon is looking for more than the minimum and after he rehabs on someone else's dime he wants to be able to have the option to leave after that year and never give that team any return for their invested dollar.
Good luck with that Leon. It's no wonder that the Celtics have moved on. It's called stupid, bad business and Danny won't do it.