The 17-year-old Turkish goalkeeper Deniz Dönmezer has attracted interest from top clubs such as Fenerbahçe. He joined Kayserispor in September 2025 and is under contract until June 2028. This season in the 1.Lig, he has made 4 appearances, and he has also been capped twice for the Türkiye U19 national team. Transfermarkt estimates his market value to be €1.00m. In addition to Fenerbahçe, Galatasaray and Manchester City have also been linked with the player.