
The two clubs have agreed the transfer of the 20-year-old midfielder who spent last season on loan at Bundesliga club Werder Bremen. The 2014 U19 European champion was under contract at the Werkself to 30 June 2018. Öztunali has signed a five-year deal at Mainz.


Werkself-TV shows the highlights of the Bayer 04 women's 0-1 loss against TSG Hoffenheim on the 19th matchday of the Google Pixel Frauen-Bundesliga 2025/26.
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A proud anniversary: 2026 marks the 50th anniversary of the founding of the first Bayer 04 official fan club. The pioneers of the "First fan club 1976 Leverkusen" still hold their love for the club dear, black and red passion knows no expiry date. Read on to discover the development of organised fan culture at Bayer 04 and where it is practised around the country and the world.
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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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Werkself TV shows the highlights of Bayer 04's 0-1 loss at Union Berlin on Matchday 23 of the 2025/26 Bundesliga season...