
“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.”

Bayer 04 host RB Leipzig at the BayArena on matchday 4 of the 2026/27 Bundesliga season. The game is on Sunday 20 September with the kick-off at 15:30 CEST. The latest information on ticket sales.
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Bayer 04 host SC Freiburg at the BayArena on matchday 6 of the 2026/27 Bundesliga season. The game will be played between 16 and 18 October. The exact kick-off time has yet to be confirmed. The latest information on ticket sales.
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With the European season ticket, fans can follow and support the Werkself on the European stage during the 2026/27 season – and are guaranteed a ticket and a seat for every UEL home match at the BayArena, right up to and including a potential semi-final. In addition, holders of the European season ticket save 20 per cent on each UEL ticket.
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A successful end to pre-season! In their seventh and final friendly of the summer, the Werkself won 2-1 at Newcastle United. After Ibrahim Maza scored inside the first minute, the Magpies equalised shortly before the break. Bayer 04's attacking endeavours in the second half were rewarded in the closing stages through substitute Victor Boniface, making it six wins from seven games in pre-season.
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Bayer 04 Women warmed up for the start of the Bundesliga season with an emphatic 7-0 victory over Belgian top-flight club Standard Liège on Saturday afternoon. Over four periods of 30 minutes, Cornelia Kramer, Lilla Turanyi and Valentina Mädl each netted a brace for the dominant Werkself, after Loreen Bender had opened the scoring. Roberto Pätzold's side kick off their league campaign at RB Leipzig in eight days.
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