George Foreman believes Mike Tyson can still challenge at the top level of boxing and break his record as the oldest heavyweight champion ever.

Foreman became the most senior heavyweight championship title holder of all time in 1994 when at 45 he knocked out 26-year-old Michael Moorer in the 10th round.

The 1968 Olympic gold medallist also became the second-oldest world champion in any weight class, behind Bernard Hopkins (46) at light-heavyweight, before retiring aged 48.

And the World Boxing and International Boxing Hall of Famer insisted Tyson, 54, showed enough in his exhibition fight with Roy Jones Jr to prove he can still cut it at the top level and win a world heavyweight title. 

He told USA Today: 'If he gets in shape like he's in now, gets his timing back, and all the other things fall into place, he can have an opportunity to fight for the title. If he can be managed right, the right champion will come to him. And if the right one comes, he can knock him out.'

'Tyson looked great, he really did. And Roy Jones had to use every old skill out of the book to keep himself from being knocked out.