Tyson Fury will not have his dad in his corner for his heavyweight clash with Deontay Wilder after he was banned from entering the United States.
John Fury, who remains a key member of the heavyweight's team, has been told he cannot travel to Los Angeles this month by US authorities.
Fury Snr's criminal conviction - for gouging a man's eye out - will mean he is unable to support his son at the Staples Center when he challenges Wilder for the WBA belt at the beginning of December.
John was released from prison in 2015 after serving four years of an 11-year sentence for the brutal attack which left Oathie Sykes half-blind.