
“Caro is a real team player, who’s appreciated by everyone. She’s battled back time and time again from difficult periods during her time with us,” said sporting director Achim Feifel. “After three years, she’s now seeking a new challenge in Bremen. We wish her all the best for her future career.”
Siems joined Leverkusen in summer 2021 from English Women’s Super League club Aston Villa, going on to make 40 competitive appearances (three goals). All 12 of Siems’ appearances this season have come in the Bundesliga, with six of them starts. The former Germany youth international previously played at Turbine Potsdam between 2015 and 2020, including three years in the Bundesliga.
“It wasn’t an easy decision for me, but I feel ready for a new step,” said Siems. “I had three great and eventful years full of valuable experiences. Also at the times when things weren’t going well, I was always able to count on the support of the club, the team and the backroom staff.”

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 working 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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Bayer 04 host top French club Marseille at the BayArena on matchday four in the 2026/27 UEFA Europa League group stage. The match kicks off on Thursday 5 November at 21:00 CET. The latest information on ticket sales.
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The BAYER 04 HILFT Day is celebrating an anniversary: for the tenth year running, a large number of employees of the Bundesliga club have been getting involved in a community project in Leverkusen and the surrounding area. Following the refurbishment of the city library last year, this time around some 70 staff members rolled up their sleeves to help out at the Bunker Youth Centre in Leverkusen-Wiesdorf. With the support of the Lebenshilfe workshops in Leverkusen and partner Coca-Cola, a rubber football pitch was laid, a Bayer 04-style lounge was created and other projects were carried out. Werkself players and coaching staff also gave their all.
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Bayer 04 Leverkusen and sponsors club partner NRG24 are continuing their partnership, which has been in place since the summer of 2023. The Bundesliga football club and the energy consultancy firm have extended their successful partnership until 30 June 2027.
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