The UFC’s scramble to find a suitable main event for UFC 300 is becoming more evident by the day, and Jon Jones was even offered the spot despite still only being several weeks removed from surgery. UFC heavyweight champion Jones (27-1 MMA, 21-1 UFC) currently is in Australia doing a multi-city tour. He sat down with Submission Radio upon his arrival “Down Under” and revealed that he recently got a call from UFC CBO Hunter Campbell, who pitched …