Danny Ainge hopes to reload the Celtics for another run at the title.

“In my perfect world, absolutely," Ainge said when asked whether he would like to retain all of Boston's free agents. "It was a good mix of guys, and had we been healthy this year we had a real chance. Had we had the team that we sort of thought we’re hopeful to have before the year started, I think we had a real chance this year. And we did in spite of it. We were close anyway. But there’s nobody on the team I wouldn’t want back. And now it’s just a matter of trying to piece this thing together with the framework of the collective bargaining agreement and budgets.’’

Boston has four unrestricted free agents -- Kevin Garnett, Ray Allen, Brandon Bass, and Mickael Pietrus

“I don’t think free agency is what people think it is,’’ Ainge said. “I don’t have a lot of flexibility if we sign a couple of our free agents back. We only have flexibility if we allow all our free agents to go by the wayside. And our four guys are in the top 10 free agents available.’’