Ronaldo admits he's a big fan of the PSG striker and believes the French youngster is sure to dominate the game in the future.
"Mbappé is the future, but also the present," said Ronaldo.
“He's a fantastic player, who is also very fast.
"He is the future."
At 35, Ronaldo has won five Ballon d'Ors, though Mbappe has something he doesn't possess - a World Cup winners' medal.