Paddy Pimblett has laid down the rules for Jake Paul, if the YouTube star wants to get in the ring and fight the UFC star.
His most recent win in the boxing ring came against Anderson Silva, his first opponent that had previously actually had a professional boxing fight.
The 25-year-old was once again successful, being taken to only the second decision of his young career, by the 47-year-old Brazilian.
Not for the first time, the American social media star was accused of only winning the fight because it was 'rigged,' as was the case after he knocked out Tyron Woodley.
Amongst those who haven't been impressed by the 'Problem Child' is latest UFC sensation Pimblett, who continues his journey to the top at UFC 282 this weekend.
The British fighter was amongst those who felt Paul's latest fight wasn't completely legitimate, which didn't exactly please the YouTuber.
He's now called out Pimblett, calling for the Scouser to find out how hard he hits in a $1 million sparring session between the two.
Now the 27-year-old has asked for a fight with Paul, but will only go ahead with it if there's some drug testing ahead of their bout.
"If you wanna have a fight with me, let's get it on," Pimblett said on BT Sport, in an interview with Michael Bisping.
"Get your manager to talk to my manager, we'll sort it through the UFC and through everyone you wanna sort it with.
"It won't be on your terms like you do with everyone else. You'll have to do a drug test, and we'll see."
Pimblett faces Jared Gordon on Saturday night at UFC 282, which will be his fourth fight in the promotion, as he attempts to stay undefeated.
His popularity has increased at an incredible rate, due to his personality and penchant for speaking his mind in interviews and press conferences.
He was extremely well received after his win over Jordan Leavitt in his most recent fight, for being very open about mental health, after the death of his friend.
The previous two fights have been in London, with the UK crowds providing an incredible support for the current roster of British fighters.
Pimblett's not only eyeing a fight with Paul, but also one against Manchester City and Portugal star Bernardo Silva, who he really dislikes.
The City star famously refused to give Liverpool a guard of honour, after they won the Premier League, and that's clearly stuck with the Reds fan.
Before that it was Manchester United star Bruno Fernandes who Pimblett wanted to see in the octagon, but apparently his countryman is now the target.