As I proposed in another thread, I think Holiday for Vassell makes a fair amount sense for both teams. Spurs get a veteran at a position of need and who fits their defensive scheme and is probably a better fit next to Castle than Vassell is. Boston gets younger and saves a bit of cash. Vassell has a reasonable contract for his production. He has some positional versatility and has even come off the bench enough that it isn't uncommon. That is an incremental salary reduction, but it would be a trade that makes sense even if it is the only one the team makes.
Holiday in Cleveland makes sense, but since both Cleveland and Boston are 2nd apron teams that would be difficult to swing. Hard to work it, but I think this might work for all 3 teams, New Orleans gets Garland: Cleveland gets Holiday, Missi, 2026 IND 1st: Boston gets Herb Jones and KO. So Boston gets a young wing and big depth while shaving 5 million. Cavs get a better defensive fit, a young guy, and a future draft pick while shaving 3.6 million (which gets them almost out of the 2nd apron). I suspect New Orleans would then move Murray, but I don't know that they'd have to.