Nate Diaz has hinted at retirement. Diaz was set to seek revenge for UFC 244 during a future rematch with Jorge Masvidal. If Diaz does call it quits, Masvidal could square off in his next fight against Colby Covington, Kamaru Usman, or Canelo Alvarez. UFC “Baddest Mother F*cker” (BMF) belt contender Nate Diaz hinted at…