Bayer 04 announced the signing of Timothy Fosu-Mensah ahead of the clash with Union Berlin. A versatile Dutch defender, “a valuable addition to our squad,” said sporting managing director Rudi Völler. But head coach Peter Bosz will have to manage without his fellow countryman in Berlin. The new signing from Manchester United is in self-isolation for five days following his arrival from England. The 23-year-old will join the squad after that. “When Timothy joins us we’ll take time to talk to him and see how fit he is,” declared Bosz at the pre-match press conference.
Captain Charles Aránguiz will be back in the squad as he was for the 4-1 home win against Eintracht Frankfurt in the DFB Cup. There is a question mark over a possible return to the squad for Florian Wirtz. The youngster has been rested for the past two games due to the current crowded fixture list. Bosz on the 17-year-old: “Flo will train again today and then we’ll decide if he travels or not.” There are no other changes in personnel from the cup game against Eintracht Frankfurt.
Ahead of the clash with the team in fifth place, head coach Bosz compared the tactical approach of the team under Urs Fischer and Eintracht Frankfurt. “Union are a team quick to put you under pressure and engage in one-on-ones, said the Dutchman. “They will definitely play the same way against us. It has worked well against other top teams.”
The team from Köpenick earned a 1-1 draw with the record champions from Munich and they secured a 2-1 victory over Borussia Dortmund. Bosz added: “Union are near the top after 15 games. Why shouldn’t they be at the end of the season? They’ve fought to get into that position and they’ve deserved it.”
In view of the strengths of the opponents, the 56-year-old is expecting “hard work” from his team. It’s not easy to move the ball around as quickly as usual against Union. “But we’ve got ideas of how we can do it against them,” declared Bosz.
Match information:
Broadcasters: DAZN and Werks11 Radio
Referee: The match officials will be announced on the day of the game

The long-standing successful collaboration between Bayer 04 and the transport service provider wupsi GmbH has been expanded: From January 2026, 100 wupsi bikes with Bayer 04 branding will be available for hire throughout the city of Leverkusen. They will complement the many existing offers and services that provide key support, especially for fans travelling to and from home matches at the BayArena.
Show more
The Werkself are back! Following the two-week winter break, head coach Kasper Hjulmand's team began the new year with an open session on Sunday. After Robert Andrich and his teammates arrived in Leverkusen yesterday for the official check-in, they got back down to business a day later in front of around 1,200 fans at the Ulrich Haberland Stadion. The report from the Werkself's first session of 2026.
Show more
In her debut season of 2024/25, Cornelia Kramer immediately became the top scorer for Bayer 04 Women. However, the Danish national team striker was stopped by an injury at the start of the new season. Now, just in time before the end of last year, she is fit again – and has extended her contract early until 2027. In this interview, the 23-year-old talks about the reasons for her decision and looks ahead.
Show more
After a two-week winter break, the Werkself resume training on Sunday, 4 January. The first session in 2026 at the Ulrich Haberland Stadium starts at 11:00 and is open to fans. Bayer 04 look forward to welcoming supporters at the start of 2026. The Werkself schedule for the new year.
Show more