Frank Dell'apa of the Globe reports:
"Sam made a comment that he would like to coach someday, and I already knew that," Ainge said. "But we are working on a deal to bring Sam back as a player. There is nothing done yet, but we could get it done soon.
"We always bring four point guards to training camp. We love where Gabe [Pruitt] is and we also have Eddie House. Rajon [Rondo] is our starter and they are fighting for the backup spot."