Fury vs Joshua: No rematch clause for Tyson Fury vs Anthony Joshua super-fight | 'End this guy and on we go!'

Former world champions Joshua and Fury meet in an all-British heavyweight showdown at the Principality stadium in Cardiff.

The two have been fierce rivals for almost a decade but, rather than setting up a second fight, their December 11 bout is expected to be a "one-off" with retirement beckoning for the loser.

Spencer Brown, Fury's manager, told Sky Sports News : "Contractually, there's one fight. There's one big fight. It was designed for that.

"I'm not saying there can't be a second fight. But, if Tyson wins, we'd like to resume things with [Oleksandr] Usyk as well."

Defeat though could usher either Fury or Joshua out of the sport. "They're all close to the end of their careers," Brown said. "Whoever loses here, where do they go? That's a tough one. Where do they go afterwards?

"Whoever wins, the journey continues. Whoever loses, they've got to think about what they're going to do and when they're going to do it."

Eddie Hearn, Joshua's promoter, believes the right kind of fight could lead to a second bout with Fury.

"No rematch clause. It's one fight, one-off. Listen, if it's a blockbuster, I'm sure they'll do it again," Hearn told Sky Sports News . "But for our mindset, it's one and done.

"Go in there, end this guy and on we go."

He added: "Both guys could be down in this fight but they're so desperate to win you can guarantee they'll be climbing and crawling off that canvas to win the fight."