CARL FROCH has slammed Anthony Joshua ahead of his fight against Daniel Dubois.

The former super-middleweight world champion called Joshua “embarrassing” as he leaked alleged WhatsApp messages between the pair.

Froch revealed he had challenged AJ after he called the Cobra a “pr***” when asked to sum him up in one one word.

In response, Froch has rubbished the two-time heavyweight world champion’s legacy.

Joshua will bid to become world champion for a third time against Daniel Dubois at Wembley Stadium on September 21.

Dubois was promoted to IBF world champion earlier this week after Oleksandr Usyk vacated the belt in order to rematch Tyson Fury later this year.

The pair almost came to blows on Thursday, with tempers already flaring months before the fight.

Ahead of the bout, though, Joshua is now embroiled in an online spat with Froch.

The 46-year-old ripped into his fellow Brit in the latest episode of Froch on Fighting.

Detailing their private conversation, he posted screenshots allegedly from their chat.

Froch had asked “who the f*** are you calling a pr***?, prompting Joshua to say: “Because… I think you are.”

When pressed by Froch, he added: “I just do,” with the retired boxer replying: “Do something about it then b****!”

Sharing screenshots from the alleged chat to X, Froch wrote: “Just remember to STAY HUMBLE and The Cobra keeps his receipts.”

In the video, he explained: “So he’s called me a ‘pr***’ and I’ve gone back to him saying “who are you f***ing calling a pr***’?

“He’s come back and said ‘I don’t like you’, and fair enough, you don’t like me, but all I’ve done is been honest and given constructive criticism on what you’ve done since losing to Ruiz and Usyk, and where you’re going now you’re fighting Dubois.

“There’s no need to get personal, no need to start on a man’s hooter – looking pretty good by the way.”

He then shared a video Joshua had allegedly sent showing himself counting £10, £20 and £50 notes.

Froch continued: “Then you’ve got your £10 and £20 notes rolled out on your bed saying [‘get on my level, get on my level’] levels, it’s all about levels.

“Where’s the humble guy gone? Where’s ‘remain humble, stay humble’ [quoting Joshua].

“He’s talking about levels and says I’m not on his level. But he’s talking about money. Fair play to him – he’s made a fortune, he’s smashed it.

“But let’s talk about levels in terms of legacy and fights and career wins. A little fat kid from Mexico made him quit for f***’s sake. He spat his gumshield out and was looking around, looking for the corner, looking for the people in the crowd to help him out.

“He got punched from pillar to post. The referee is looking at him – ‘do you want to carry on, do you want to keep fighting?’ And what’s he done? He’s quit on his feet.

“That is embarrassing – something the Cobra would never, ever do. And he can take that to the bank!”

Joshua has moved to 28-3 as a professional since suffering back-to-back losses to Oleksandr Usyk in his last two title bouts.

His knockout victory over Francis Ngannou in March extended his winning streak to four across the last two years.

Meanwhile, Froch retired from boxing in 2015 with a 33-2 professional record.

He ended his with a pair of high-profile title defences against bitter rival George Groves, finishing Saint George in both fights.