Carl Froch believes Tyson Fury's nutritionist must 'step in' to ensure he doesn't lose any more weight ahead of his fight with Oleksandr Usyk.
The boxing world is currently looking forward to the blockbuster showdown on May 18, with both men currently undefeated in their careers.
Fury has slimmed down drastically ever since his narrow victory over Francis Ngannou back in October.
The 35-year-old appears to be taking his battle with Usyk far more seriously, having been accused of underestimating Ngannou last time out.
Boxing news: Tyson Fury has been scrutinised over his weight by Carl Froch as his fight with Oleksandr Usyk approaches
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Yet while Fury's slimmer physique has pleased fans, Froch isn't convinced.
Speaking to Fastest Payout Online Casino, the former boxing star said Fury losing weight could come back to bite him because he's relied on his weight to win fights in the past.
He said: “I’m not sure if [Fury coming in light] is a good thing to be honest.
"That weight allowed him to bully Deontay Wilder, lean on him, tie him up and just have his own way.
"When it gets on top for Fury, when he’s under pressure, he’s able to sit back, get hold of the back of his opponent’s neck, lean on him and use his body weight to get himself out of trouble.
"If he’s losing weight and he’s slimmer, he could struggle.
"I’d like to see him perform at a slimmer weight.”
Froch then went on to say Fury's nutritionist should 'step in' to ensure the Gypsy King eats more red meat in order to boost his chances of glory.
“Fury’s upped the training, he’s upped the diet a bit more," he added.
"He’s eating more healthily and the weight’s just falling off.
"His body and the way it looks is a product of his training camp.
"So maybe the nutritionist needs to step in and say, right, get some more red meat down here. Get some more protein down you and do some weight resistance exercises.
"I think he needs the muscle on now though. He needs to be bulking up muscle.”
In Usyk, Fury is facing the toughest opponent of his career.
Though he's beaten Deontay Wilder and Wladimir Klitschko previously in his career, Usyk is viewed as the most complete boxer on the planet right now.
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Boxing news: Carl Froch is worried by Tyson Fury losing weight prior to his fight with Oleksandr Usyk
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And Froch fears for Fury, insisting the 35-year-old is no longer the force of nature he once was.
“One of the main advantages Fury has over Usyk is his size," he said.
"And if he’s going to bring that size down, he then has to rely on his speed and his movement and his boxing ability.
"His punch output’s not as big as it was. He doesn’t throw as many feints.
"He’s not as light on his feet and he gets hit on the chin.
Boxing news: Millions are set to tune in when Tyson Fury locks horns with Oleksandr Usyk in Saudi Arabia
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"In the last couple of years, he’s been hit more than he’s ever been hit.”
The contest between Fury and Usyk takes place on May 18.
And who ends up winning arguably the biggest boxing fight of the 21st century remains to be seen.