So after reading this, just focusing on this season alone, forget about draft picks, etc we would get in return. We know we would have to take on other players to make the salary match. I prefer it's not butler. Rather two or three guys, hopefully some bigs, or at least some serviceable center better than Plumlee/Oso. (Assuming we don't have Richards from a trade.)
I have long been thinking we would play better with addition by subtraction. Case in point, no Nurkic, no turn overs and better defense, and Suns have been on a three game win streak. Taking away our best scorer in Durant may work, because then we could get two bigs on the court, use Tyus to generate the offense, and have Booker and Beal as your scorers. Ideally I keep Beal coming off the bench and have someone bigger like Oneal in that starting five. I would have Booker, Oneal, Tyus, Dunn, Plumlee/(Richards)/new center from Durant trade.) Two bigs help the rebounding and defense. Oneal is a better defender and can shoot the three. Booker is our scorer, and Tyus sets the table.
That makes our bench with Allen and Beal to lead the off bench scoring.
It could work just by making us a more traditional built team. Less time waiting for Durant to iso, but the trade off is would Booker then Iso like Durant, or would he still play like point book that can give you 5 to ten assists and 27 points a night?