Should be a good fight. I mean what's the hold up? Better now or never, GSP is aging And Khabib has 70 inch reach that is lightweight reach (the same reach as Gaethje, I think several featherweights have longer reach than Khabib and Gaethje) e.g: Conor 74, Poirier 72. I think GSP vs Usman is a perfect matchup for each other. Has a build, reach, mass for welterweight.