If I'm Presti, I take Bradley, Brown, and the Nets' pick for Sabo. Ainge should do this, so long as he can ensure Westbrook stays longer (maybe via a sign and trade , if still permitted under the CBA
). A Westbrook and Thomas backcourt would be pretty damn scary for opposing defenses. Or after getting Westbrook, Ainge could make a move for another free agent (Jimmy Butler) and have Isaiah come off the bench. It really all depends on whether Ainge wants to win now or bide his time for the trade deadline or next off-season. If he waits until next off-season, he could try another pitch to Durant and/or make a move for Rudy Gobert. Ainge really has all the leverage and a few avenues to consider but he MUST part with Bradley, Brown and that pick to get Sabo.
The longer OKC tries to hold onto Westbrook, the less likely it is he'll stay. OKC REALLY put themselves in a bad spot. Presti needs to focus on building around Oladipo and Adams via trades and draft picks since nobody's coming to OKC as a free agent. And he needs to accept the fact that ALL trade offers he gets for Westbrook are going to be low-ball offers. He just has to take the best one he can get and Ainge has the right pieces.
