Exclusive: Trainer Ben Davison on why he walked away from 'brother' Tyson Fury

"Credit where credit's due – he helped me come back from 28 stone down to fighting fit. He was there. The only reason I'm with SugarHill is because I need a knockout in this fight. If I was looking to nick a points win I'd have stuck with Ben. That ain't going to win it for me here. I need a knockout. I ain't going to get a points decision here and I am not going to be robbed again."

Davison concurred with Fury's account and said that it had been his decision, adding that he decided to walk away "on principle". But that has not stopped the pair from staying in touch during the weeks of camp.

"We've sent a few texts but I don't want to get into big conversations with him," Davison said. "They've got a game plan and he's got to stick with that. Hopefully I'll see him for a minute or so before. I know he can do it."

Davison recently made a video analysis of the first fight in his role as an analyst for BT Sport, and is hoping his former charge will heed some of his advice. But he knows the Lancastrian well enough to realise that it might be a case of having to expect the unexpected.  

"Look, Tyson is a special fighter," he said. "You can't bet against him winning the fight by any means. You wouldn't bet against him doing it in the second round. He's just that type of person. If he says he's going to do something, a lot of time he does it.

"He could knock Wilder out. It's risky and it's taking chances. I wouldn't say it's impossible for Tyson."

Could they work together again ? "Potentially. I've worked with Billy Joe on and off before. He's worked with other people.

"Potentially, I wouldn't see why not. But let's see. This fight, though, 100 per cent will decide the No 1 heavyweight in the world."