KSI shows off insane Mike Tyson neck training routine as YouTube icon prepares for Misfits battle against Joe Fournier

KSI showed off his insane Mike Tyson-esque neck training routine just days before his next fight.

The YouTube, music and influencer boxing star faces millionaire nightclub tycoon-turned 9-0 boxer Joe Fournier on Saturday.

And KSI has prepared from head to toe for the toughest bout of his career, more specifically his neck.

At the pre-fight workout, he rolled around the boxing ring canvas with his weight on his neck, an exercise famously used by Tyson.

The aim of the drill is to build up muscles in the neck, making it easier to withstand punches.

Tyson – the youngest heavyweight champion aged 20 – once had a 20-INCH neck by 18.

And KSI, 29, will hope to channel his inner Iron Mike when he faces Fournier, 40, at Wembley Arena.

And he sent out a brutal warning to his next rival as fight night approaches.

KSI told DAZN: “I’m ready, finally I get my hands on that motherf****r, sorry for my language.

“Joe Fournier is about to be in hell when he enters that ring. I can’t wait.

“The alpha, the omega, the man who knocks is going to be knocking on his head relentlessly, over and over again baby.”

But Fournier, unfazed later replied: “He’s going to do what he needs to do, I think that’s what’s going to get him knocked out.

“I think that aggression, look at Ryan Garcia, look how he got knocked out, because he was too aggressive.”