The only way I'd be happy trading this pick is for an elite NBA star (i.e. a player on a higher tier than George/Butler). That means players that are currently MVP level, a list that by my estimation is only six names long: LBJ, Durant, Westbrook, Curry, Leonard and Harden. Of course of that list there are five that no one could imagine getting traded. Clearly none of the three best teams in the league are trading any of their elite stars, and Houston's breakthrough year isn't going to end with their MVP-candidate traded. That leaves Russell Westbrook, a player who is not only the odds on favorite for the MVP but also on a team that is on the fast track to nowhere: the NBA purgatory otherwise known as the perennial 40-win team. Sam Presti might not want to trade Westbrook, but if he's smart he knows that he can't build a championship around him unless the improbable happens and OKC attracts top tier free agents. He also knows that if Danny Ainge were to offer him a franchise reshaping, godfather package of the 2017 pick, the 2018 pick and Brown (and presumably salary cap filler) that he will never again get a better offer for his star. For the Cs, the key to such a trade would be to pair it with the signing of another star free agent to give them a core of stars that could potentially make them contenders even in the LBJ era.
Of course this is probably not going to happen, but barring this type of blockbuster the Cs are better off keeping Fultz and hoping that he can pair with next year's pick (which includes multiple players with superstar potential) to be the core of a post-LBJ era dynasty.