Atletico Madrid president Enrique Cerezo has denied reports that Manchester United have made an offer for Sergio Aguero.
Argentine striker Aguero has been heavily linked with a move to Old Trafford as the Premier League champions look to increase their attacking options after losing Cristiano Ronaldo and Carlos Tevez.
Reports had claimed that United had offered £30million plus Portuguese winger Nani in an attempt to persuade Atletico to sell.
However, Cerezo has dismissed the latest bout of speculation and confirmed he had not received a bid from United for Aguero.
Cerezo also outlined his determination to keep hold of the club's key players after Barcelona acknowledged an interest in former Red Devils striker Diego Forlan.
"Manchester United has not made any offers for 'Kun' [Aguero] - and we will not sell any player," Cerezo told Marca.
"We will not sell Aguero, Forlan, Simao - because we don't want to sell any of our players.
"We will keep all of our players because we are very good as we are and we have a great team."