Would you trade for a player that doesn't want to play for your team? It was Charlotte that pulled out after AI nixed the deal, not Philli. Same goes for Sacremento and Golden State after he made it known he doesn't want to play on the west coast. Its similar to the Shaq situation. He didn't have a no trade clause but made it quite clear that if he didn't get traded to a team he approved of there would be no contract extention.
AI holds all the cards here, and hes going to end up where he wants to go, not where the 76ers want him to be.