The former heavyweight champions will headline a Ring show at Cardiff’s Principality Stadium on December 11, live on Netflix.

The widely-held assumption that both boxers have seen better days hasn’t affected the British boxing fan’s appetite for the fight. Around 700,000 were reportedly waiting online when tickets went on sale last Friday.

On July 5, the fight came perilously close to collapsing when 36-year-old Joshua (30-4, 27 KOs) was dropped twice in the opening round before stopping relatively unknown Albanian puncher, Kristian Prenga, in the second.

Although 38-year-old Fury (36-2-1, 25 KOs) has had to pick himself up off the canvas time and time again during his career, two-time welterweight champion, Porter, believes "The Gypsy King" will win and that Joshua’s resistance has eroded more by a decade spent campaigning at world championship level.

“I've always used the analogy of car crashes,” Porter told talkSPORT.

“Even in fights that you win, you still get little things, right? They're little scratches. In time, you paint over them, you know? But in the heavyweight division, they're big crashes. Even when you don't go down, those are dings. Those are dents in the car.

“I think the older you get, it's harder to heal. The list kind of goes on from there. The punch resistance of AJ is lower than it's ever been.”

The fight between Fury and Joshua has always been painted as a classic battle between boxer and puncher.

Joshua was talented enough to win an Olympic gold medal but Fury has always looked the more adaptable of the two and has been confident enough to use different styles in his biggest moments.

In 2015 he traveled to Germany and outfoxed Wladimir Klitschko over 12 cat-and-mouse rounds to become the unified heavyweight champion.

In the second of his outstanding three-fight series with Deontay Wilder, Fury turned bully and used his size and strength to push the dangerous American onto the back foot, dominating him until he fight was stopped in the seventh round.

Porter doesn’t seem to think that Fury will go looking for the knockout against Joshua but isn’t ruling out the possibility of him finding a finish.

“Tyson's never really been a fighter that really sits down on his punches,” he continued. "We saw him do that against Deontay Wilder. We saw both those guys go down in their trilogy.

“I don't see Tyson Fury putting AJ down. However, there's no secret that he doesn't have that same punch resistance that he used to.”