Boxing icon Mike Tyson has shown that age is just a number, putting himself through the paces with a sensational training regime at the ripe old age of 53.Fifteen years after his last fight, the former undisputed heavyweight champion looks in unbelievable condition ahead of a potential blockbuster return to the ring.Tyson uploaded the training footage to his Instagram account, with the 53-year-old showing remarkable speed and power on the pads.The caption ‘Train smarter every day’ has fans certain that they won’t have to wait much longer for Iron Mike’s return, with a number of fighters trying to tempt Tyson into the ring.UFC’s Jon Jones, currently sitting at the top of the pound-for-pound rankings in the sport, has made it no secret he’d like to fight the former boxer, recently taking to Instagram to call out Tyson.“I’ll box you in the ring if you promise to give me a real fight in the Octagon afterwards,” wrote the UFC light heavyweight champion. “And because I respect you so much, I promise I won’t break anything on you.”Despite the tempting proposition, Jones’ six-inch taller frame and nearly 14-inch longer reach would be sure to cause problems for a boxer 21 years his senior.You can watch Tyson’s gruelling training session below.

It is reported that the likes of Shannon Briggs, 48, and Tyson’s greatest rival Evander Holyfield, 57, are also keen to get back in the ring, and are possible opponents for the New York-born fighter.

A fight with Holyfield would complete a trilogy of bouts against The Real Deal, with the pair’s second clash becoming infamous across the world when Tyson was disqualified for biting part of his opponent’s ear off.