Frank Warren thinks Anthony Joshua needs to find an entirely new coaching team if he wants to avenge his loss to Oleksandr Usyk.
Joshua lost his heavyweight titles to Usyk last month when he was outpointed by the Ukrainian in London.
It marked the second time in four fights Joshua has lost his belts, dropping them in a massive upset to Andy Ruiz in 2019.
Fighters and pundits such as Tyson Fury's father John slammed Joshua's coaches for not changing their gameplan when 'AJ' was getting outboxed in the later rounds of the fight.
And Warren echoed those criticisms when he told SecondsOut that Joshua needs to get rid of his current trainers.
He said: "Should he fight him [Usyk] again? If he does what he does last time, I don't see him beating him. Even then, I think Usyk will get more out of that win than Joshua.
"I just don't see what Joshua can do any different to win that fight other than get rid of all the trainers around him and try change what he's doing. Will he do that?"
Joshua will activate the rematch clause in the hopes of winning back his titles against Usyk, with February or March of next year being a likely date for the second fight.
'AJ' has previously likened his head coach Rob McCracken to successful football coach Sir Alex Ferguson and said McCracken has been an integral part of his heavyweight success.
Coach Joby Clayton was also criticised during Joshua's loss to Usyk for shouting "brilliant AJ" whilst Usyk was gaining the upper hand on him.
Can Joshua beat Usyk in a heavyweight rematch? Let us know your thoughts in the comments section below.
And of the fight last month, Warren said he was shocked that Joshua was being outjabbed by Usyk given the size advantage he had.
He continued: "I said if Usyk's there at the end he'll win on points. What I didn't expect was the way he won. I really thought that AJ would have come out and pose his physical attributes more, his jab, his size, which he didn't.
"I thought as far as Usyk was concerned I thought he'd have to roll under him, get underneath his jab and work inside. He didn't do that, he was outjabbing the guy with the longer reach and the bigger guy.
"I was quite shocked at that. He hurt him in the fight. He wobbled him early on and certainly in the last round I think the bell saved him, he would have been stopped otherwise. There was no debate about how he got beat, he got beat.
