"Let's go Floyd. We have to fight now."
Khabib Nurmagomedov is thinking big following his fourth-round victory over Conor McGregor at UFC 229 and the man he wants next is Floyd Mayweather.
In a video on Leonard Ellerbe's Instagram, Khabib called out the American boxer by saying 'there is only one king in the jungle'.
Like Mayweather, who fought McGregor in the boxing ring last summer, Khabib is undefeated in his career and a fight between the two would see one of them lose their undefeated status.
"We are two guys who never lose," said Khabib in the video, "50-0 versus 27-0."
"[But] in the jungle there is only one king. Of course, I am the king because he cannot drop McGregor but I drop him easily. Let's go."
It didn't take long for Khabib's challenge to catch Mayweather's attention and the 41-year-old soon responded on Instagram.
MAYWEATHER: "GET THE CHEQUEBOOK OUT"
"CBS, Showtime and MGM Grand get the checkbook [sic] out!" wrote Mayweather (see below). "Go to [Leonard Ellerbe's] page to view Khabib Nurmagomedov challenging me.
"Let's make Las Vegas great again!"
Mayweather retired from boxing for a second time in 2015 only to make a one-fight comeback against McGregor, putting his unbeaten record on the line.
And it seems he's prepared to do that once again, which isn't overly surprising when you consider Mayweather made over $300m from the McGregor fight.
However, Khabib appears to have a problem with the idea of meeting in Las Vegas.
The Nevada State Athletic Commission (NSAC) are currently withholding Khabib's $2m purse for beating McGregor after he jumped over the Octagon cage and attacked Dillon Danis.
The Russian doesn't want to fight in Las Vegas as a result and he made those feelings clear in his latest Instagram post.
"But no Vegas, they won't pay my money," he wrote.
Khabib's refusal to fight in Las Vegas means he and Mayweather would have to find a new venue away from the T-Mobile Arena.
There's a lot of money to be made from a PPV fight between the two, though, so perhaps the NSAC would be wise to give Khabib the purse he's entitled to and move on.