I think the longer it goes on the better it will be for the Sixers. In the first place, it's unlikely that any player or players they get in return are going to instantly make Philly a contender. So there's no reason to trade him, other than that they're paying big money to a guy they're not playing - so what, they've been doing that for years!
There are good teams out there with multiple players in the top twenty. One of them needs to get serious about what it will take to improve their team.
Parker for Iverson is a trade SA should make in a heartbeat. Iverson is so much more talented than Parker, that he would provide Duncan with much better support. I just don't think SA has any players the Sixers would want. I wouldn't want Parker in a trade, even if Eva comes to Philla. to watch! I'm not impressed with Manu either.
Dallas makes good sense, since it was apparent in the last finals that Jason Terry needs some seasoning, if he's ever going to be tough enough. If AI was running the point in Dallas instead, IMO, they'd have a ring by now. Dallas has more players than they know what to do with and Cuban doesn't care about the Salary Cap. It's not like they're setting the world on fire with their play right now, either. The Mavericks are in need of a spark, and AI is Mr. Sparky himself!
There is another alternative- which is to send him to a team that has trouble filling the stands. AI is a very popular player, and people come out to see him. He puts on a good show. Maybe Atlanta will take him for Joe Johnson.