The American attracted headlines and massive viewing figures during his destructive reign and has acknowledged the importance of another big-hitting champion such as Joshua in the glamour division.
"If he continues to be that way, his sky is the limit for him," said Tyson. "Just that one fight changed boxing, that one fight, and that's what fighting needs.
"Floyd [Mayweather] is making a lot of money and we've got a lot of little guys fighting, but what they want to see is a heavyweight fight.
"The heavyweight that knows how to fight, like Joshua, that's what makes boxing big. The heavyweights make boxing big.
"The other guys can make some money, but they are not making the sport big."
n social media