If they could get a couple of rotations pieces (one being an all star) and save cash in the process any team would operate that way.
The move could be a benifit to both teams. Milsap is a stop gap, signing a 2 year 19 million deal. Moving him for a legitimate rim protecting center and nabbing a 1st rounder to boot isn't a bad haul. Plus they'd ,possibly, slip in the standings which would only help their draft order.
Milsap is a versatile scorer (include from 3) and can defend. Carol is a long, 6'8 SF who can play both forward spots (the 4 in small ball)
I mentioned to Chinook that we'd need to get another bigman (on the account that Ayers and Baynes are awful).
A more realistic ,low key deal, that I'd like to see, would be Aminu for Bonner +a 2nd rounder (possibly a future, protected 2nd as well).
He is essentially a taller (6'10) longer, and more athletic Leonard. He doesn't have Leonard's upside or his 3pt shooting but could start at PF for the Spurs and also play small forward when Kawhi sits. Diaw and Splitter could both come off the bench with Manu and Beli and Mills (he'd be less of a liability defensively playing with Leonard, Diaw and Splitter on the floor).