You have a good point, which is why I think the deal doesn't happen without 11. They are banking on an upgrade at the front court AND getting either Vassel or Bey to fill the whole on the wing with a 3 and D prospect. Not ideal to put a rookie in the SL, but when you have Curry, Thompson, Green and LA there all you need is a young kid with the prototypical wing body who can play defense. It's actually pretty smart on their part. I think to make it all work you go:
To GS - LA & 11
To SA - Wiggins, 2, & Minny's 21 1st rounder
This really is win win for everyone.
GS gets a win now player who will immediately bolster their lineup for at least a year or two to compete with LA (the Clippers and rockets will both be looking for bigs this year to hold down AD so the importance of GS having one is more important than ever). They also get a pick that allows them to fill a need at the wing with a defensive rookie. And they can fill out the roster with ring chasing vets per usual.
The spurs should not be trying to win this year. The west is an arms race, the streak is broken, and we need to focus on rebuild. Enter Wiggins, a perennial under achiever on an albatross contact. Put him along the youngsters and let pop and chip work their magic. He's had steady improvement recently so the evidence points to continued improvement with good coaching. Best case he finally reaches his #1 overall potential; worst case he flounders a bit and we offload his contract at the and of the year. His contact will have one less year on it which will make him more appealing to other teams and it won't hurt us long term. We can trade DDR with this also to free up guard minutes for the young guys and get an asset or two for him while we're at it since Wiggins can step into the 3 spot. Pick up a few vets to fill in the frontcourt. Stick number 2 in Austin (not ideal, but let's be honest that's what pop will do anyway) and we end up with two 1st rounder next year with a better draft that we can use on two guys or to move up again.
Again, everyone wins here. But knowing how ridiculously stupid Minny is they'll probably end up sending KAT to GS to get their first rounder back