Still one of Jones/Khabib/Nunes? Israel maybe? Probably has a good 5 years in him minimum. I'd assume. Some are touting him for MMA goat. Tad bit much. Think he can dominate for a few years and be the face of the UFC when Conor dies out circa 2021/22. Reyes? Young undefeated fighter who already has a title shot on the way. Probably won't win, but if he doesn't pull an Anthony Smith and performs well not getting finished, ala Santos his future is very bright. Brok Weaver? Usman is my pick. Don't know who will beat him to be honest.