There are rumors that Kawhi will be traded in the off-season. He might demand a trade to a contender and we have enough ammo to throw at the Spurs. It's bound to happen.
Leonard (+ filler) for Brown, Rozier, Smart (S+T) and/or Morris (to make the salary work) and several first rounders.
Lebron goes to Philly/Rockets to make this a triple threat:
Steph/Durant/Klay/Draymond vs. Lebron/Harden/Paul vs. Kyrie/Kawhi/Horford/Tatum/Hayward (that has got to be considered the best top 5 in the game)
Leobard or not, I can't see Danny not making a significant trade in the off-season with Rozier and Smart being RFA and sitting on multiple promising draft picks from Memphis and obviously SacKings.