- Russian initially teased fight in video on social media but appeared to be joking
- Mayweather responded by telling TV networks to get their chequebook out
- He believes he could make £152million by fighting the Dagestani UFC champion
has told 's Khabib Nurmagomedov to 'come to my world' in challenging the Russian to step into the boxing ring for a fight which the American estimates could earn him $200million (£152.6million).
Mayweather says his purse could be double what he earned from a similar showdown with in 2017.
Nurmagomedov beat McGregor in mixed martial arts in last weekend before calling out Mayweather, who says the fight must take place in the Nevada city.
'Oh, we fighting. He called me out. So, he gotta come to my world,' Mayweather, 41, told TMZ Sports.
'I'm my own boss. So, I can't say what's going on on Khabib's end. But, on my end, we can make it happen.
'When I face Khabib I'm getting a nine-figure payday. It's more than the McGregor fight. Probably $100m more, guaranteed.
'I'm going to say somewhere between $110m and $200m guaranteed.'
Nurmagomedov extended his perfect professional mixed martial arts record to 27-0 and retained his UFC lightweight title with a stunning fourth-round submission victory over McGregor in a fight which ended in controversy and a mass brawl.