Okan Buruk, coach of Galatasaray, stated that FC Porto asked for 45 million euros for the 25-year-old goalkeeper Diogo Costa. However, FC Porto claims this amount is not accurate and is much lower than the actual release clause, which is set at €75 million. FC Porto sent a letter to Galatasaray expressing discontent with the statements made by their coach.

Galatasaray reportedly made a new offer of €25 million for Diogo Costa, but FC Porto, led by André Villas-Boas, refused the offer decisively as they did with previous proposals.

Galatasaray submitted an official offer for Diogo Costa, but Porto rejected it within two minutes. According to Portuguese media, Porto will not consider any offers below the release clause of 75 million Euros.

Galatasaray has made a move to sign 25-year-old Portuguese goalkeeper Diogo Costa from Porto following Fernando Muslera's departure. The club has offered 20 million euros including bonuses for the transfer. This report was mentioned in Sky Sports DE. Costa's contract with Porto runs until June 2027, and his current market value is estimated by Transfermarkt to be €40 million. Manchester United and Manchester City have also been linked with the player.