Both would say no way for basketball reasons - and I’m not sure they could make the money work.
OKC says no because in SGA they have a 6’6” PG who scores at three levels and seems to thrive under pressure. He can be at the core of a team that makes a deep playoff run. They don’t trade him for an unstable, who-knows player who gets the yips in playoff games, refuses to shoot, and is now holding out - not even if you add a perfectly good but not great player who plays the same position (and is only 6’2”). They’d be giving up the best player in this trade - best in general, and best *for them* in particular.
Then add - Simmons and Maxey make almost $40 mill and SGA this year is about $5.5. I don’t know if OKc has the cap room to absorb all this salary (trade machine has SGA grayed out due to his exemption, but if you’re OKC do you tie up all that room to make Simmons your marquee guy? No way, no how.
Philly says no because Daryl Morey has a hard head and thinks that Simmons still commands all-NBA value on the trade market.