
"Moussa Diaby has developed into a fantastic player in his time at Bayer 04," declared sporting managing director Simon Rolfes. "The professionalism and determination, he showed every day in pursuing his career, was really exceptional. Moussa has made his mark on our team in recent years with his unique style of play and incredible pace. With a special style of play, he's a person who has his heart in the right place. We will follow his future closely and wish him great success," said Rolfes.
Diaby scored 49 goals and provided 48 assists for the Werkself in 173 appearances. For the 24-year-old, Bayer 04 Leverkusen is "a really special club. I received so much support and time on the pitch as a very young player that I could become what I am today. Without Bayer 04 and all the teammates and colleagues, who have always supported me, it might not have happened so quickly," said Diaby. "Now I want to take the next step and start a new chapter. I will always be happy and grateful thinking back to my time in Leverkusen."

As with the other youth teams (U16 to U19), Bayer 04 are also relying on familiar faces—some in new roles—and fresh impetus from the coaching staff for the 2026/27 season in the younger age groups. An overview of the U11 to U15 teams.
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After eight years in the youth set-up at Bayer 04 Leverkusen, Benjamin Adam is leaving the club. The 35-year-old, who most recently coached the Leverkusen U17s, will take charge of the Hansa Rostock U19 team next season.
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As well as internal changes and familiar faces, Bayer 04 are also looking to bring fresh impetus to the coaching staff of the senior youth squads for the 2026/27 campaign. Here is an overview of the U19, U17 and U16 teams.
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Bayer 04 have signed 16-year-old defensive midfielder Kennet Eichhorn from Hertha Berlin. The Germany U17 international is joining the Werkself from the Berlin Bundesliga 2 club on a long-term contract. Eichhorn made 19 appearances for the Hertha Berlin first team last season, scoring two goals.
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