Possible Trades for San Antonio

I just dont understand why the Spurs dont make a trade. The Spurs are struggling and are 1-2 on their Rodeo Trip. Personally I would trade any player on the Spurs roster other than Duncan, Parker, Ginobili. Manu is not playing like the way he used to in the '05 Playoffs. Tony is emerging himself into one of the best guards in the game today and Tim Duncan is doing everything he can to help the Spurs win. But just Tony & Tim playing is NOT enough for the Spurs to win. The Spurs need to make a couple of roster changes. List all the possible trades the Spurs might pull off before the Trade Deadline, if any.