According to the Portuguese manager, who is currently enjoying working as a pundit since he was sacked by Manchester United last year, he said there is no other player who has more than Mbappe in terms of potential.
He told BeIN Sports: ‘For a player like Mbappe, when you speak about the future, you don’t need to say what he’s going to be like in five years’ time, in 10 years’ time.
‘Just focus on now. He’s absolutely incredible.’
He added: ‘I think going by his age and [and considering] the age of Cristiano, of Messi, [both] over 30, Neymar is 27… when you go to the market level and age is also a factor, I think he’s the most valuable player in the world.
‘In a hypothetical transfer, he’s the most expensive player in football now.
‘In terms of his qualities, [he is] unbelievable. One word is enough. It means everything.’