
"Thorsten Kirschbaum has great experience with a long time in the game and many appearances in the first and second divisions. He will have a positive effect on the training ground, sharpen everyone's awareness and he will push himself and his team-mates every day," said Bayer 04 sporting director Jonas Boldt. "We have three top-level keepers and are really well set up."
For Kirschbaum, the move to Europa League participants represents "a great opportunity at a top German club. Of course, it really appeals to me to be part of a team playing in Europe," declared Kirschbaum. "Everybody here can rely on me doing all I can to help Bayer 04 Leverkusen achieve their ambitious targets in three competitions."

The German Football Association (DFB) has officially recognised Bayer 04 as a centre for the development of female talent for the 2026/27 season. The club was awarded that role on 1 January 2026, and this status has now been renewed.
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Bayer 04 Leverkusen have sold young defender Andrea Natali to AZ Alkmaar on permanent terms. The 18-year-old Italian was on loan at the Dutch club last season, where he mainly played for the reserve team in the second division.
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Bayer 04 Leverkusen have loaned new signing Luca Erlein to newly promoted FC Energie Cottbus for the 2026/27 season. This will give him the opportunity to play in Bundesliga 2. The club signed the 19-year-old right-back on a permanent basis last week, on a contract to 30 June 2030.
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Trophies as a youth, appearances in the pro game and his first taste of international competition: new arrival Luca Erlein, who has been signed from TSG Hoffenheim, can already look back on some remarkable achievements and moments in his fledgling career. We take a closer look at the 19-year-old right-back, who can also fill other roles across the defensive line.
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