OKC takes Jared McCain #12, and trades Isaiah Joe (who they know they can't afford going forward with Caruso) for Jonathan Isaac and DaRon Holmes II at #18. Those draft picks make $7,158,000 combined, bringing OKC's total cap to $128,789,259. If the salary cap is $141m as projected, that keeps OKC above 90%, but with $12.2m in cap space. OKC can hold that space open until Alex Caruso is eligible for a renegotiation extension in 6 months, and adjust his salary for 2024 to $22m. This would allow them to extend Caruso for 4 years around $17m a year for a total of 4/$80m in new money. No idea what he would extend for, but I'd also try to lock up Isaac to a longer contract, especially if it was around the MLE. Having both Isaac/Caruso allows the Thunder to play either in the starting lineup dependent upon matchup, but still let Holmes develop since Isaac probably isn't going to play big minutes. OKC would be the best Defensive team in the NBA, and 15 guys who can all shoot well from 3 (Dieng/SGA being the worst 2 shooters, with Dieng shooting 35% in the G-League and SGA hitting the same).
Orlando makes this trade because Isaiah Joe is a proven 41% shooter which is a big need, and it opens up a max cap space slot for a big free agent signing such as Paul George, or you can sign two guys like Tyus Jones and Isaiah Hartenstein which gives you more flexibility down the line with Banchero/Wagner extensions looming.