
“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.

Werkself player Montrell Culbreath and Bayer 04 loanee Francis Onyeka are part of Germany's final squad for the U19 European Championships this summer. The tournament is in Wales from 24 June to 12 July.
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Carles Martìnez is raring to go. The 42-year-old speaks in his first interview in Leverkusen about the club's development to date and how he wants to build on it. He describes his previous work in France, Kuwait, Qatar and his native Barcelona, his experience in developing young players, and the key steps between now and the start of pre-season training.
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New Bayer 04 head coach Carles Martínez has arrived in Leverkusen! At midday on Friday, the 42-year-old spoke in a press conference at the BayArena about his philosophy and his aims. Managing director sport Simon Rolfes also discussed the reasons for appointing the former Toulouse boss.
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Bayer 04 Leverkusen have appointed Carles Martínez Novell as the new head coach. The 42-year-old Spaniard worked for FC Toulouse in the French Ligue 1 until the end of the season. Martínez finished last term in ninth place with the club from the south of France. He will take over the Werkself on 1 July 2026 and has signed a contract to 30 June 2028. Martínez, whose contract with Toulouse expires at the end of the month, succeeds Kasper Hjulmand at Leverkusen, who is leaving the club after one season.
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Welcome to Leverkusen, Carles Martínez Novell. Bayer 04 have appointed the 42-year-old Spaniard as the new head coach on a contract to 2028. Martínez most recently worked for FC Toulouse in the French Ligue 1 until the end of the season. He previously spent four years at Barcelona's legendary academy La Masia in his home city. Bayer04.de introduces Martínez in more detail.
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