Mbappe, 18, has become the hottest property in world football after scoring five times in seven Champions League games this season.

He has been watched by the biggest clubs in the game who are fighting to lure him away from the principality when the transfer window opens.

Guardiola knows that if he wants to sign the young French starlet, he must be prepared to pay more than the £89million splashed out on Paul Pogba last summer by Manchester United.