Anderson = Not worth keeping for over 5 mils per year.
Blossomgame = unproven. Can't count on him panning out.
White = Should play PG.
Paul = Scrub
Danny = will leave
Manu = will probably opt in.
So, if Kawhi stays (not a very likely "if") you only have him and a 42 year old as your only two wings. And you don't feel like getting more wings.
Spurs need to get as many athletic, tall wings that can shoot as possible, tbh. The Spurs already have their bigmen inked for the next season: Aldridge, Gasol and Lauvergne, with Costello as a roster injury replacement. In today's NBA you don't need more than 3 or 4 bigs in your roster and like it or not, the Spurs already have those spots secured. They made their sandwich and now they have to eat it. Sure, if you can get other big by somehow trading Gasol it would be awesome. But if Gasol stays put, the Spurs can't afford wasting more roster spots on bigs.
Seriously son, get with the times already.