How is the math if he decides to join GSW? Can they sign him outright or will it require a trade?
They'll pretty much gut their team. I think they'll be able to keep Steph, Klay, Green, Iggy, and Livingston to sign Durant (while losing Barnes and Ezeli as free agents), and they'll already be at the cap.
That's yet another reason that I can't imagine KD goes there. If he wants a lesson on how important a supporting cast is, look at the Clippers and what they haven't been able to do, even with a ton of talent.