Tyson Fury set to face Oleksandr Usyk on December 17, one day before the World Cup final

Tyson Fury and Oleksandr Usyk are set to meet in a huge undisputed heavyweight title fight in Saudi Arabia on December 17.

Usyk successfully defended his WBA (Super), IBF, WBO and IBO titles against Anthony Joshua at the King Abdullah Sport City Stadium on Saturday evening and called Fury out.

'The Gypsy King' retired after knocking out Dillian Whyte in April, but announced he'd be returning to the ring to face Usyk in the early hours of Sunday morning.

Per the Daily Mail, Team Fury are currently in talks for a bout to unify Fury's WBC heavyweight title with Usyk's belts which could net him up to £50 million from a £150 million fight package.

It's currently pencilled in the day before the World Cup final, which is set to take place in neighbouring Qatar.

Prince Mohammad Abdulaziz, who serves as the Saudi minister for sport, explained: "We are very interested in the fight for the undisputed heavyweight title. We are looking to do that in the city of Riyadh."

Usyk had Fury in his sights after overcoming Joshua via split decision, claiming it's the only fight he wants next.

"I'm sure that Tyson Fury is not retired yet," the 35-year-old said in the ring.

"I'm sure, I'm convinced he wants to fight me. I want to fight him and if I'm not fighting Tyson Fury, I'm not fighting at all."

Fury was watching his heavyweight rivals closely and didn't hold back when rating their performance.

He then added he would come out of retirement to 'relieve the Ukrainian dosser' of his belts.

The 34-year-old stated: "I’ve just seen Joshua lose for the second time to Usyk, [he was] out of his depth. England has been relieved of its belts but there is a remedy and solution that I can suggest. 

"If you want those belts back then send in the Gyspy barbarian; send me in and I will relieve the Ukrainian dosser of his belts like I did the last Ukrainian dosser.

"But it's not going to be cheap, if you want the best you have to pay. It's going to be very expensive; so get your chequebook out and I will relieve the Ukrainian dosser of the belts."

Joshua, meanwhile, has apologised for his post-fight behaviour. 'AJ' stormed out of the ring after throwing two of Usyk's belts out the ring, before returning to deliver a strange speech.

"I wish @usykaa continued success in your quest for greatness," he wrote on Twitter.

"You are a class act champ. Yesterday I had to mentally take myself into a dark place to compete for the championship belts! I had two fights, one with Usyk and one with my emotions and both got the better of me.

"I’ll be the first to admit, I let my self [sic] down. I acted out of pure passion and emotion and when not controlled it ain’t great.

I love this sport so so much and I’ll be better from this point on. Respect."