Oh I'm sure he is, but if he and LeBron are working together, LeBron's going to LA too. Or Kawhi would come here and take the extension if LeBron is here. We shall see, lots will happen and who knows in what order.
As far as his difficulties in SA, that's pretty weird, because he's not a prima donna and the Spurs are usually a happy family. But I think he's mostly just a shy person. In which case Philly might not fit (but neither would LA, even though it's home). More importantly though, Brett Brown knows as much about Kawhi Leonard as anyone besides Popovich and Buford (and other Spurs people), so if he wants him on his team I'm good with that.