McGregor to Mayweather: If it's a joke, he'll regret it UFC Negotiating his next fight

UFC fighter Conor McGregor has hit back at comments from Floyd Mayweather and looked at his rivals for the next UFC fight.

Tony Ferguson, Khabib Nurmagomedov and Nate Diaz are all threatening to steal his titles whilst a fight with Mayweather is still an option.

"If this [Mayweather's comment] is a joke, he'll regret it for the rest of his days," he said.

"Currently I'm in negotiations for my next rival, we have various options.

"There's the current interim champion (Ferguson), the unbeaten Russian (Nurmagomedov), with a possibility of doing a big event in Russia.

"Obviously there's the trophy with Nate Diaz and of course the Mayweather fight is there.

"There are a lot of options, at this moment in time we are at the negotiating table, it's good times, life is good."

Threat to Mayweather

The ex-boxer began a campaign on social media to fight the Irish star again in another fight which would be lucrative for both parties.

Floyd's potential MMA debut has changed McGregor's UFC plans too.

"If this is a joke, he'll regret it for the rest of his days," he continuned.

"I said I would do it and I did it.

"It's his time now, I'll do what he wants in the ring.

"If he truly does it, I'll have a lot of respect for him, but you don't win respect until you turn up."