Kasımpaşa, a Süper Lig team, signed 32-year-old German-Turkish central midfielder Kerem Demirbay, who left Eyüpspor. In 2023, Kerem Demirbay joined Galatasaray from Bayer Leverkusen for a transfer fee of 3.7 million Euros and recorded 7 goals and 10 assists in 76 official matches for the club. He has been capped twice by the German national team, scoring one goal. In the 25/26 Süper Lig season, he has made 16 appearances and provided 1 assist. According to Transfermarkt, his current market value is estimated at €1.50m.