We're probably not going to have any cap space next year, so it seems like a bad plan. As mentioned in the other thread, Kuminga seems to find Sac an attractive option, and the Warriors are likely dithering over protections on the pick. If we cave in and give an unprotected pick, they may actually make the move rather than have themselves stuck with an unhappy Kuminga for a year and then lose him for nothing.
I think Kuminga is a good gamble - not guaranteeing he'll be a star, but a good gamble. And given that he's younger than Clifford, he's really "basically" a draft pick if we sign him for four years (OK, more expensive), so giving away a draft pick for him really isn't a big deal.