According to German Sky Sports, Galatasaray wants to introduce a goalkeeper, and they have officially offered to buy Diogo Costa.

Costa is currently 25 years old and plays in Porto. Galatasaray has quoted 20 million euros + additional terms to buy Costa.

Galatasaray's goalkeeper's first choice is Manchester City's Ederson, but it has not yet agreed with Manchester City, so they are looking for other candidates.

If Ederson cannot join, Costa is Galatasaray's plan B.