Tom Aspinall will be on standby as the backup for Jon Jones ‘ title defense against Stipe Miocic , confirms Dana White . The Brit has been angling for a fight against the heavyweight champion for what seems like a lifetime. Despite only holding interim gold, Aspinall sees himself as the true champion and wants to prove that against a man considered by many to be the greatest of all time. The 31-year-old has been on a tear through the division.