Dr Burak Yildirim is ending his time at Leverkusen this summer. The 45-year-old doctor for orthopaedics, emergency surgery and sports medicine will completely focus on his practice in Pulheim in the future. "I'd like to thank all players, management and staff for the years of support and trust. I'm proud to have been part of this great club for so long."
Yildirim came to Bayer 04 in 1996. He started as a youth coach before moving into the section providing commentary for the visually impaired after three years. He became the team doctor in 2013 and has carried out that role for the last ten years.
His successor is Dr Stefan Porten. The 46-year-old is taking over looking after the Bayer 04 first team squad immediately together with Dr Philipp Ehrenstein. Dr Porten was the team doctor for the Germany U20 and U21 teams and for many years and up to 2018 he was the team doctor at Borussia Mönchengladbach. Dr Porten has an orthopaedic surgery in Cologne.
Dr Daniel Lay, previously the team doctor for the Germany Women's U20 team, will look after the medical needs of the Bayer 04 U19 and Women's teams.
Sven Elsinger is returning to the Leverkusen physios. The 55-year-old is taking charge of the first team physiotherapy section, a position he held for 13 years up to 2021. Elsinger recently worked in the youth section at Bayer 04. His deputy is Ill-Han Yun.
Jonas Rath is a new fitness coach at the Werkself. The 43-year-old was the fitness coach at Borussia Mönchengladbach for the last three years. Rath takes over from Schahriar Bigdeli who occupied that role since 2006 after being a long jumper with TSV Bayer 04 Leverkusen.
Strengthening the Bayer 04 Leverkusen youth teams: Konstantinos Kotsifakis will join the Werkself from Bundesliga 2 club Hertha Berlin for the 2026/27 season, where he will be a permanent member of the Leverkusen U19 coaching set-up. The German-Greek will also take on an operational role in coaching the Bayer 04 Future Team. The 29-year-old was most recently head coach of the U17s at Hertha Berlin.
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Another award for the Bayer 04 head groundsman and staff: After coming top in the 2021/22, 2022/23 and 2024/25 seasons, the BayArena pitch came second in the Bundesliga Pitch of the Year ranking for the 2025/26 season. VfL Wolfsburg secured the top spot this year, with TSG Hoffenheim in third place.
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Opening opponents, derby weekends, the opponents in the season finale: This information and more will be available to Bayer 04 fans on Thursday, 2 July, when the 2026/27 Bundesliga fixture list is published.
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Rüdiger Vollborn has been at the club for 40 years, he holds the record number of Bundesliga appearances for the club (401) and is the only Bayer 04 player to have won both the UEFA Cup (1988) and the DFB Pokal (1993). And the Berliner stayed with the Werkself after ending his impressive playing career as he worked as a goalkeeping coach for the following nine years. Vollborn now works under the Bayer Cross as a fan liaison officer and club archivist. Since February 2021, the personal Black and Red lexicon takes Werkself fans under the heading of 'Rudi recounts...' on a brief trip through the history of Bayer 04 every month…
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