The 23-year-old winger links up with the Süper Lig side for his second loan spell in Turkey, having registered four goals and one assist in 13 games at Çaykur Rizespor last season.
Rak-Sakyi joined Palace’s Academy from Chelsea in 2019 and has since made 10 senior appearances for Palace in all competitions.
He impressed during a loan spell with Charlton Athletic in 2022/23 and then scored seven goals in 35 Championship appearances for Sheffield United in 2024/25, prior to spells at Çaykur and Stoke City last season.
Everyone at Crystal Palace wishes Jes the very best during his loan abroad.