
“After playing for Turbine Potsdam and most recently in England, Caroline Siems joins our team as a young but very experienced full-back,” said Bayer 04 head coach Achim Feifel. “She has enormous potential. And we hope she can provide lots of positive input with her dynamic and attacking style of play.”
Siems, who has played for all Germany junior teams up to the U19s, is looking forward, “to returning to the Bundesliga. Discussions with the Bayer 04 management and the conditions here have convinced me that I can best develop at Leverkusen both on and off the pitch. I’m very excited about the years ahead.”
The defender played for Turbine Potsdam from 2015 to 2020 before moving abroad to Aston Villa last year. Siems made 14 appearances for the Villa Women last term.

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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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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After the 2-1 defeat at Premier League club Nottingham Forest the night before, it was straight back to work for the Werkself at midday on Thursday with an intensive training session in hot temperatures at the hosts' training ground.
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Werkself TV shows the highlights of the 1-2 loss in the friendly match at Nottingham Forest...
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The Werkself suffered a first defeat in the current pre-season fixtures. The sixth friendly of the summer ended in 2-1 reverse at Premier League Nottingham Forest. The English side took an early lead (4’) but Patrik Schick levelled just after the half-hour mark (32’). Nothing much happened after that, and the match looked set to end in a draw. However, the hosts managed to score the winning goal late on (90').
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