German attacking midfielder who made his Bayer Leverkusen debut at 17, becoming the youngest scorer in Bundesliga history. Played a pivotal role in Leverkusen’s historic unbeaten domestic double in 2023-24, scoring 18 goals in 49 appearances and earning Bundesliga Player of the Season honors. Scored a hat-trick in the title-clinching 5-0 win over Werder Bremen. Joined Liverpool in June 2025 for a reported 100-117 million euros.