You can trade a player again within 48 hours. I would guess if something else is brewing, the Suns will delay finalizing the Shaq trade in order to get all their ducks in a row. If they are trying to get a center I would think they could be looking at Chandler, Camby, Beidrins, or Dalembert.
I think the Shaq to Cleveland deal has just been made official. I'd imagine if the Suns are going to move Wallace, I'm thinking it will be by the end of tonight (i/e before the draft concludes).
Of those centers, Camby is most bang for the buck, but I can't see the Clips trading him. At last note, Dunleavy stated he wants to keep him to serve as both protection in the front court and as a mentor for Griffin. Camby serves both purposes well-- he's a former high draft pick himself, can keep Griffin on the clean (not that I envision Blake as much of a troublemaker, but sometimes even the nicest kids go bad when they get to the big time) and in the front court, he'll take a ton of pressure off Griffin in the rebounding department and defensively.
Otherwise, Chandler contractually works I suppose, although he more or less potentially makes a big dip in to the 2010 class tough. With his injury, I'm not so sure I'd rather just see Phoenix buy out Wallace's contract and save the money. Same goes for Beidrins and Dalembert, who have really rough contracts. Beidrins' runs for another 5 years IIRC, while Sam Eye Am has another two and is more or less contractually the same anchor that Chandler would be for 2010.