"The players were very self-critical after the defeat. We know we didn't play well. We've analysed the game, identified the mistakes and worked on what we need to do better next time. There has to be a reaction! But those are just words – we have to perform on the pitch tomorrow," said the head coach.
After the match at FC Köln and ahead of the encounter with the Old Lady, the dismissals of Aleksandar Dragovic (two yellows) and Leon Bailey (a straight red) were the subject of much discussion amongst the players: "It was just daft of us – above all that Leon has been sent off twice within such a short space of time. Anybody who knows him will also know he's normally not like that. He’s not the type to just hit an opponent," said Bosz about the 22-year-old who has been suspended for three league games and also fined €20,000. "We were angry and disappointed," Bosz made clear, "he has to learn from his mistakes. With the benefit of hindsight, we have to help the player." Dragovic and Bailey are both unavailable for the game against Hertha as are the injured Mitchell Weiser and Joel Pohjanpalo.
The approach to the final home game of the year is clear: "We want to take all three points at home to Hertha. We can't afford to let our heads drop because of a bad game at FC Köln. We've played some good football in the first half of the season and, at times, won points where others might not have expected it. On the other hand, there were also games I wasn't happy with where we should have won. I'm not completely satisfied," said the Dutchman an assessment of the season to date. That makes it even more important to end the year with two wins.
And the Werkself are looking to start with a victory against the club from the capital tomorrow. How Hertha will line-up at the BayArena under new coach Jürgen Klinsmann, who won the World Cup in 1990 along with Rudi Völler, is not yet clear to the Werkself coach. "A new coach often works on the system or rotates a lot. Klinsmann has tried different things." Therefore, it's particularly important to focus on our own game. In the second packed week of fixtures in succession, it will be important to manage the work rate. "The second day after a game is hardest for the players. In our experience, it's much better 24 hours later. We'll be able to give our all tomorrow."

Four Bayer 04 players are in action at the 35th edition of the Africa Cup of Nations being played in Morocco from 21 December to 18 January 2026: Eliesse Ben Seghir for the hosts, Edmond Tapsoba with Burkina Faso, Ibrahim Maza for Algeria and Christian Kofane with Cameroon. Updates on the AFCON matches involving Werkself players...
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Rüdiger Vollborn has been at the club for 40 years, he holds the record number of Bundesliga appearances for the club (401) and is the only Bayer 04 player to have won both the UEFA Cup (1988) and the DFB Pokal (1993). And the Berliner stayed with the Werkself after ending his impressive playing career as he worked as a goalkeeping coach for the following nine years. Vollborn now works under the Bayer Cross as a fan liaison officer and club archivist. Since February 2021, the personalised Black and Red lexicon takes Werkself fans under the heading of 'Rudi recounts...' on a brief trip through the history of Bayer 04 every month…
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With their wonderful goals, Martin Terrier and Florian Wirtz are up for the Bundesliga Goal of the Year 2025. Voting for fans will run exclusively via the official Bundesliga app until Sunday, 4 January.
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The ‘year after’ the most successful year in the club's history brought many changes at Bayer 04. In an exclusive double interview with bayer04.de shortly before the Christmas break, Fernando Carro and Simon Rolfes spoke about building a new team capable of winning trophies, the work of coach Kasper Hjulmand, the young new signings who have quickly developed into key players, and their personal plans for the Christmas holidays. Their outlook for the coming year also shows that the potential is far from exhausted and ambitions remain high.
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Last-minute ecstasy, huge disappointment and a historic performance on the European stage - 2025 was a real emotional roller coaster, especially for the U19s. A rousing run in the knockout phase secured the team a place in the final of the German championships, where they lost by the narrowest of margins. Despite the departure of several key players, the young Werkself team quickly regained their usual strength and qualified for the knockout rounds in the UEFA Youth League for the first time at the end of the year. In 2025, youngsters Jeremiah Mensah and Montrell Culbreath made their debuts in the Bundesliga, the DFB Pokal and the UEFA Champions League. The other youth teams also contributed great performances and a number of trophies to the collective Black and Red success, while the successful Bayer 04 Future Kids project broke new ground. Read on for the 2025 review of the youth teams.
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