Cengiz Ünder was scouted by Altınordu FK when he was 10 years old and then he joined the club. Spending nine years in Altınordu's talent development system, he was then transferred to İstanbul Başakşehir FK (Turkish Süper Lig) when he was 19. After a successful season he then moved to AS Roma (Serie A). Lastly, he was loaned to Premier League club Leicester City FC. He is currently playing for the French side Marseille.
Joined the club when he was 13 years old. He spent three years at Altınordu Football Academy. At 16 years old, he made a professional contract and joined the First Team. After a successful season he was transferred by İstanbul Başakşehir FK, 2019/2020 seaon champions of Turkish Süper Lig.