
The central midfielder will play for the Bayer 04 U19 team. 16-year-old Sertdemir, who is of Turkish descent, is set to start with the first team squad in the pre-season under the new Leverkusen head coach Gerardo Seoane. The Swiss coach will meet up with his players for the first time on 5 July in Leverkusen.
“Zidan Sertdemir has a special talent. His signing is a great success for our scouting department after having had him on their radar for three years,” reported Bayer 04 sporting director Simon Rolfes. “We see great potential in Zidan and believe he will make the grade in professional football. That’s why we are including him in training with the first team straight away. Zidan should get experience with the senior squad early on and then take his time in moving up to the next level.”

After a run of seven games unbeaten in all competitions, the Werkself suffered a 1-0 defeat at FC Union Berlin despite their best efforts. Captain Robert Andrich, who took responsibility for the goal, said after the match: "Now we have to focus on not losing our heads even in difficult situations. That has always made us strong in the past." The Werkself review.
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Bayer 04 were beaten 1-0 away at Union Berlin on Matchday 23 in the Bundesliga. Kasper Hjulmand’s side struggled to create clear chances, while the hosts struck the only goal of the game through Rani Khedira in the 28th minute.
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Sandwiched between their UEFA Champions League knockout play-off tie against Olympiacos, Bayer 04 return to Bundesliga action on Saturday with a trip to Union Berlin (kick-off: 15:30 CET). It’s a fixture of contrasting styles, with Leverkusen preferring to control the play while Union look to remain compact and counter. The Berliners are therefore suited to facing top teams, but they have only ever managed to win one of 16 meetings with the Werkself, who are looking for a fifth clean sheet of 2026 but will need to beware the home side’s threat from set pieces. Here’s all you need to know ahead of the game in our matchday news.
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After six wins in seven games, the Werkself will be looking to continue their winning run in the capital at FC Union Berlin. Coach Kasper Hjulmand spoke ahead of the match on Saturday, 21 February (kick-off: 15:30 CET) about defenders, the short preparation time and the condition of the pitch at the Stadion An der Alten Försterei.
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