From Roy's comments today it is sounding like the blazers made the ultimate decision about Roy retiring. Here is the important quote:
Now I was under the impression form last season that Roy and his doctors decided he should retire, which led to the team using the amnesty clause, all of which kind of made sense if Roy thought he couldn't play. It now appears that Portland wanted out of Roy's contract and suggested the retirement. Letting your All-Star player go seems like a bad move. Of course paying a starter or role player Max Money is not a good decision either if Roy wasn't going to improve.
Well, it never really was officially my decision to retire. With the process in Portland, I met with the team doctor, we talked for awhile, we have a really, really good relationship. He's a guy that's been working with me for five years with my knees. It was a situation where I went in for the physical, he thought it would be in my best interests to stop playing basketball because of my knees. We pretty much left it up to the team to decide if they wanted to pursue the medical retirement route. After a week, they decided to use the amnesty. For me, it was never that I was retired. My knees were a situation that I was going to have to think about if I wanted to continue playing. After a few months of sitting out, I decided, 'Hey, I don't want to stop playing basketball.' It's something I want to continue going forward with. It's never a situation where I said, 'I'm done forever.' It was more of a pause.
Either way I for one feel quite a bit mislead by the organization.
Update: This quote was from last year after the retirement was announced.
That night, Roy called the Blazers and told them his career was over. He would seek medical retirement because of a career-ending injury
“I don’t want to put words in his mouth, but he told me I was finished playing basketball,” Roy said.