Looks as if the roster will stay as is, for now. Marc Spears reports:

Free throws: The Celtics have 16 players on their training camp roster and no more will be added, general manager Danny Ainge said. Sam Cassell and newcomer Darius Miles do not have guaranteed contracts. Even so, the Celtics might waive another player with a low contract or make a trade to accommodate both Cassell and Miles (the roster limit is 15). "We've got a month to find out," Ainge said .