Definitely bad blood, I assume. But DeMar is from L.A. is a "Big Name Star" and could be the most obtainable if AD is off the table, Washington isn't willing to move Beal (They'd be crazy not to take the #4 pick, Ingram and Ball), Butler re-signs, Kyrie goes to the Knicks or stays, and Kawhi stays or goes to LAC.
I think an equally bigger obstacle would be whether PATFO would trade DeRozan and risk not making the playoffs. He's good but I think the Spurs would still be a playoff team with out him and with Hunter slotted in at the 3.