Celtics, Lakers, or Hawks. The Celtics are in the driver's seat with our assets - if we want him we can have him, though we'll have to pay. The Hawks would be a really interesting fit, too, and they have a major offer for him at the deadline. But I don't think they have the desired assets to really get him.
Philly has the assets and will try, but he won't stay there. I also think Minny could be in the running, but they'll set their sights on Butler first.
All of this "he's guaranteed to go to the Lakers stuff" needs to stop. From everything I've read, he wants to be on a title-contending team OR IF THATS NOT POSSIBLE then in LA. Of course, he'd obviously love to be on a title-contending team IN LA, but that doesn't look even remotely possible in the next several years. And no one blames him for that, because that's where he's from.
But it's highly doubtful that he signs in LA as a free agent without significant change between now and then, because he ultimately values winning above all else, which LA can't provide. Now, if the Lakers would offer up The Godfather package for him of something like the number one pick, Ingram, and Randle, then sure they might trade him there. But at that point why would PG even stay there? They'd still be one of the worst teams in the league with little to no way to improve with their lack of assets and cap space.