Floyd Mayweather has all but killed off talk of a potential fight in the UFC after its chief Dana White claimed talks over a deal were underway.
But Mayweather rubbished those claims, stating that there was a difference between "would and could".
"I never said I was going to fight in the UFC," Mayweather told FightHype. "I didn't say that. I said if I wanted to, and what I could do. Would and could do is different things. I'm not going to do it though."
Mayweather spoke earlier this month about how he could make $1 billion if he was to fight in the UFC and reiterated this.
Mayweather said: "They talk about 'oh yeah Floyd said he's fighting in the UFC for a billion dollars'. That's not what I said.
"Exactly what I said is this: If I made over a billion dollars before, I could do it again. If I chose to get in the UFC and fight three fights or fight four fights and then fight Conor McGregor, I could make a billion dollars, which I can.
"I could do it in three fights, or even four fights, I can make a billion dollars if I choose to get in the octagon and fight. Fight three or four fights and then fight Conor McGregor in the octagon.
"We just don't know what the future holds for Floyd Mayweather and I don't look forward to getting back in the boxing ring. That's what I don't look forward to doing. I'm just saying I could. I'm not doing it but I'm saying what I could do to make a billion dollars quick if i wanted to do it. That's what I am saying."