UFC heavyweight champion Jon Jones is open to fighting the next crop of contenders, but it will ultimately come down to the magnitude of potential fights.. If Jones (27-1 MMA, 21-1 UFC) is able to defend his belt against Stipe Miocic at UFC 295 in November and opts not to retire, he has some potentially intriguing opponents on the horizon in Tom Aspinall and Sergei Pavlovich.