File- This July 13, 2012 file photo shows Boston Celtics' Sean Williams (56) getting to the basket ahead of Orlando Magic's Ryan Thompson (1) during an NBA summer league basketball game in Orlando, Fla. The Houston Rockets will send Courtney Lee to the Boston Celtics as part of a multi-team, sign-and-trade deal, completed on Friday July 20, 2012. The Rockets will receive a second-round pick in next year's draft from Boston (a pick that originally owned by Charlotte), forward JaJuan Johnson, guard E'Twaun Moore and Williams. Houston will also acquire the rights to guard Jon Diebler from Portland. The Celtics completed the deal by trading guard/forward Sasha Pavlovic to Portland. (AP Photo/John Raoux,File)