Arsène Wenger has been linked with a move for the 21-year-old Rennes midfielder this summer, with Internazionale and Real Madrid also reportedly interested.
And Desailly, who spent six seasons at Chelsea, believes the France international would be suited to the rigours of Premier League.
“He needs to come to the Premier League,” said Desailly.
“We want him in this competition because it’s the best and he can really develop his skills.
“He likes to play with tempo. You can see the way he gets the ball and passes straight away: long ball or short ball. He has that reading which is needed in the Premier League.
“If I was a chairman of a club, I would just close my eyes and put the figure on the cheque to get him because he’s really the future if you develop him.”
He added: “I would really like to tell him, first of all, like a defender, what is your mission? It’s to defend.
“If you defend very well, anything extra that you do is fine. But first of all concentrate on defending very well and passing the ball quickly to the attackers.
“Once he will have understood that you will see he is the best midfielder – better even than Patrick Vieira.”
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