Atletico Madrid have told Manchester United and Chelsea that £50 million won't be enough to land Sergio Aguero.
The Argentina international is sought-after property and has been linked with Manchester United as Sir Alex Ferguson looks to replace Cristiano Ronaldo.
Inter Milan and Chelsea are also thought to be tracking Aguero, but Atletico have maintained that they do not want to sell.
The Primera Liga outfit's president, Enrique Cerezo, has now announced that even a huge bid could not be enough to make the club consider parting with the 21-year-old.
"Perhaps even if an offer for this amount of money (£51m) arrives, we would not accept the sale," Cerezo told Spanish media.