Jake Paul will face former UFC star Ben Askren on April 17 in his third professional bout.

The YouTube star will take on the retired mixed martial artist over eight rounds on pay-per-view at a location to be determined.

It will be Askren's first professional boxing fight and his first bout of any description since his final UFC fight against Demian Maia in 2019.

"I know Jake Paul is enjoying pretending he is a fighter," Askren told ESPN.

"I think on April 17 he is going to have a rude awakening to what being a fighter is really like. Jake has led a privileged life and doesn't really know what the meaning of being a fighter is. I'm going to put his dreams to an end."

Paul has victories over fellow YouTube star AnEsonGib and former NBA player Nate Robinson on his boxing record.

Jake Paul in action against Nate Robinson
Jake Paul in action against Nate Robinson

He tweeted: "Representing the UFC Mr. Napoleon Dynamite look-alike Ben Askren finally accepted the fight.

"He is a two-time NCAA champion, a world champion in two different global mixed martial arts organizations and has [sic] less losses on his record than Conor McGregor, yet, I'm still going to knock him out faster than Masvidal did.

"Some MMA guys think because they throw punches they know how to box. I shocked the world when I knockout an NBA superstar athlete, but some people still complained that he's not a real fighter.

"So now I'm giving the people what they want by taking on a real fighter. After I add Ben to my knockout meme collection, what can anybody say? April 17. 82 days. The countdown starts now. Be ready."

The 24-year-old, who is the younger brother of Logan, first laced up the gloves in 2018 when he took on Deji Olatunji, the younger brother of KSI.

Paul won by fifth-round stoppage and then made his professional debut in Miami early last year.

He followed that up with a brutal second-round KO of Robinson on the undercard of Mike Tyson's exhibition bout against Roy Jones Jr last November.

Askren, meanwhile, brought a lofty reputation to the UFC when he joined from One Championship in 2018.

But after a debut victory over Robbie Lawler, he was KO'd by a flying knee from Jorge Masvidal inside five seconds of their meeting in summer 2019.

And after his defeat by Maia, he announced his retirement from the sport of mixed martial arts.