Conor McGregor and Floyd Mayweather have reignited their war of words and the latter accused the Irishman of "blowing smoke up people's a**" with reference to him attaining a boxing licence in California.

The first ever two-weight title holder in the history of the Ultimate Fighting Championship (UFC) indicated that he wants to switch sports and try his hand at boxing. A fight between the two stars has been doing the rounds in recent weeks, but both Mayweather's camp and the president of UFC Dana White have dismissed the possibility of the bout taking place.

The now retired and undefeated five division champion's camp labelled McGregor's actions a "con job"designed to garner more fans. Mayweather reciprocated the comments when asked about a possible fight, stating that he never fights outside of Nevada, with his last coming in 2005 in Portland, Oregon.

McGregor also responded to the boxer's comments with an expletive laden rant and made it clear that he is willing to get into the boxing ring with anyone, as he is the one that is bringing the numbers. He has also openly challenged Mayweather, and is confident that he can knockout the undefeated boxing legend, who has a 49-0 record.

"Man, I don't fight in California. What did he get a license in California for?" Mayweather said, as quoted by complex.com.

"I'm [going to] tell you like this, he's blowing smoke up everybody's ass. He don't really want to fight because I went to his boss. He don't really want to fight. He's just doing that to keep his name alive, you know what I'm saying, to stay relevant. He don't really want to fight. He's doing that building his followers, but he's smart," he added.

"F**k Floyd! What's Floyd going to do? We're looking for anyone. I'm the one with the numbers. We're looking for anyone," McGregor responded to Mayweather's comments about his foray into boxing and possible fight between the two.