Vladimir Radmanovic has been called the Sonics' X-factor this season.

Whether he becomes the Sonics' ex-factor is going to be one of the franchise's most prominent questions this summer after an up-and-down season in which both his position and his playing time have been an issue.

"We'll do that at the end (of the season)," he said. "He has shown the potential to play that position, the power forward, and then he has struggled. I think it's something that you wait, you look at it at the end of the season.

"You just weigh everything at the same time as far as do you need to fill that spot."

Nick Collison's role in his return after not playing this season because of two shoulder surgeries will be a consideration, but an even bigger part is the continuing tension over Radmanovic's role.

"One of the biggest things is what Vlade is thinking," McMillan said. "Where is his mind? Does he accept the way he has been used because he may not like the way he has been used this season."