Jan Thielmann

1. FC Köln

In his youth years, Thielmann first played in the then youth game community Hetzerath / Föhren / Bekond and switched to the youth team of Eintracht Trier for the 2014–15 season. For the 2017–18 season, he moved to the U17s of 1. FC Köln. He played 24 games for the team and won the championship with them in June 2019 after a 3–2 win over Borussia Dortmund. In the 2019–20 season, Thielmann was promoted to the U19s. He made his professional debut with 1. FC Köln in a 2–0 Bundesliga win over Bayer 04 Leverkusen on 14 December 2019. In doing so, he became the first footballer born in 2002 to play in the Bundesliga, and was the second youngest league debutant for his club after Yann Aurel Bisseck. After a convincing debut, manager Markus Gisdol continued to start Thielmann in games against Eintracht Frankfurt and Werder Bremen. In January 2020, Thielmann signed his first professional contract. The collaboration between him and 1. FC Köln was extended until 30 June 2022. "He is very, very advanced for his age, both physically and physically, and he also has a very good understanding of the game. We trust him that he will hold his ground in the long term," said sporting director Horst Heldt in justification go the contract extension. On 5 December 2020, Thielmann scored his first goal as a professional in a 2–2 draw against VfL Wolfsburg. On 20 January 2021, he scored an injury time winner against Schalke 04 in a relegation six-pointer. On 30 April 2021, the club…

As of match played 29 August 2026

1.FC Koln

2. Bundesliga: 2024–25 Germany U21

UEFA European Under-21 Championship runner-up: 2025