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Former world super-middleweight champion Carl Froch has aired his concern over Anthony Joshua's decision to part ways with Rob McCracken and insisted the British heavyweight should retire if he loses to Oleksandr Usyk.
Joshua is due to face Usyk for a second time on Saturday after losing his WBA, WBO, IBF and IBO belts in an unanimous points decision at the Tottenham Hotspur stadium in September last year.
Ahead of their rematch, Sportsmail sat down with Froch to discuss AJ's relationship with McCracken, his loss of confidence following Andy Ruiz's victory, the style of boxing he needs to produce against Usyk and what will happen if he loses again.
Former world super-middleweight champion Carl Froch has spoken to Sportsmail ahead of Anthony Joshua's rematch with Oleksandr Usyk on the weekend
The rematch between the two heavyweight's will take place in Saudi Arabia on August 20
Joshua parted company with McCracken on a definitive basis earlier this summer and turned to Robert Garcia, the highly-decorated Mexican-American coach with a catalogue of world champions on his CV.
Froch worries Joshua has made the wrong decision to part ways with the British coach - claiming McCracken is a boxing 'guru' that can help athletes return to their best form.
Speaking to Sportsmail's Charlotte Daly, Froch said: 'I looked at the original Karate Kid with my son the other day. I look at Daniel Larusso and Mr. Miyagi as me and Rob McCracken.
Froch has heaped praise on his former boxing coach Rob McCracken as said he was responsible for making him go professional
Froch (L) also said he would never have parted ways with his former coach McCracken (R)
'If he says jump I say how high. If he was wax on wax off I start waxing the car. That's the sort of relationship I had with Rob McCracken.
'I don't know what the relationship with Joshua and Rob was so I can't really comment. But, AJ brought a lot of people into the team.
'He had people he brought in to hold the pads. He had another couple of mouths in the corner for his fights. I don't think I like that.
'Maybe it's Rob's mistake for letting people in. Rob told me what to do and I did it. We structured my training regime together.
Froch says Joshua made a mistake by parting ways with his former coach Rob McCracken
'That being said, if Rob McCracken couldn't get the best out of Anthony Joshua I totally understand why he has got rid of him.
'In his mind he needs a change and change can be a good thing if it gives him greater motivation to get up in the morning or more motivation in the gym.
'I would have never parted ways with Rob McCracken. I went professional because of Rob. He convinced me.
'He was the guru. I was very much the student. I never would have dreamed getting rid of him.
'I still think it was potentially a bad move [ to leave Rob McCracken] but if he performs against Usyk we'll all be saying it was the best thing he did.'
AJ decided to partner with Robert Garcia (right) - who is a highly-decorated Mexican-American coach with a catalogue of world champions on his CV
Joshua said earlier in the week that he will be looking to be more 'aggressive' during his rematch against Usyk on Saturday.
AJ told Sky Sports: 'I wanted to outbox my opponent, whether it was Usyk or anyone else, that was the mindset [in the first fight]. 'I wanted to outbox my opponent and on Saturday I want to smash my opponent.'
Joshua continued: 'You've got to focus on that aggressive aspect, that competitive spirit and at the end of the day, I don't give a damn about your jab, I don't care how
