I still think, if he is going to play anywhere, its San Antonio or bust. Pop isn't called CIA for nothing, he isnt going to come out and say "yeah, well, we are going to wait and feel things out and if we think we need Bruce back by mid-season..... thats just something we will have to look at when the time comes."
It's a sensative situation that would have other teams screaming collusion if there was any indication he was coming back to the Spurs, and after "Barry-Gate" I think the league would look into it this time if there was indication there.