Conor McGregor may be returning to the UFC Octagon this weekend, but he hasn't ruled out a return to the boxing ring, and a possible fight vs Manny Pacquiao or a rematch with Floyd Mayweather.

Conor McGregor will return to the Octagon this weekend when he takes on Donald Cerrone in the main event of UFC 246 on Saturday night.

This will be his first fight inside the Octagon since he challenged Khabib Nurmagomedov for the UFC Lightweight Championship in the main event of UFC 229 in October 2018.

While his 2020 might be more orientated towards making a UFC comeback, Notorious hasn't ruled out a return to the boxing ring either.

Speaking to ESPN at a news conference ahead of the Cerrone fight, McGregor said it would be an honour to be part of the first combat sports main event at the Allegiant Stadium, the new home of the Las Vegas Raiders.

He also added that the event would likely be boxing, and not a UFC event, before making reference to a rumoured fight between himself and Manny Pacquiao.

McGregor said: "I would love to be the first combatant to fight in that arena. What a fight that would be against Manny. A small, powerful southpaw. I'd have to figure out the weight and these things. But something that interests me, no doubt."

This comes after Sean Gibbons, president of Manny Pacquiao Promotions, sent a mock fight poster to Yahoo Sports on Wednesday featuring photos of Pacquiao, McGregor and the location at Allegiant Stadium, which is expected to open in July.

McGregor also added that he would love to have a rematch with Floyd Mayweather as well. The two previously fought back in August 2017 with Mayweather coming out on top.

Notorious said: "I certainly would love the rematch with Floyd. It could very well happen this year, yes. It could very well happen. I know the Manny one is there whenever."

McGregor said he'd be willing to box other fighters, too, not just Mayweather and Pacquiao.

He said: "I've gone right to the top [in boxing], right? I did do well. I won rounds. I hit [Mayweather] more times than anyone -- I hit him more times than Manny hit him. ... I feel like I could fight anyone. I could compete against anyone. People want to see me compete, and I want to compete for the people."

Whether it be with UFC or boxing, it looks like 2020 could be a big year for McGregor in combat sports.