
The 54-year-old, who took Ajax through to the Europa League final against Manchester United in 2017, has signed a contract to 30 June 2020. Bosz will be joined at Leverkusen by his assistant coach Hendrik 'Hendrie' Krüzen.
"Heiko Herrlich gave our team an important boost last year after a very difficult season and he took us into Europe. We were convinced and determined to turn the corner with him as head coach. Unfortunately, there has been an undeniable stagnation in the development of the team. Even though we are within reach of the European positions at the end of the year we find ourselves in a situation after a less than satisfactory first half of the season that makes a change of coach essential from our point of view," said Rudi Völler as sporting managing director in explaining the decision.
"With Peter Bosz as manager we want to get back to meeting our ambitious targets as quickly as possible," declared the Bayer 04 chairman Fernando Carro. "Of course, that is also down to the players. They have to consistently show their undoubted ability, which unfortunately has rarely been evident over the past six months."
In the view of Bayer 04 sporting director Simon Rolfes, Peter Bosz wants to play "Attacking, high tempo and exciting football. He has always demonstrated particular passion in working with young players wherever he has coached. Therefore, Peter is an excellent fit here with us as we have placed great emphasis on developing highly talented youth players and bringing them through to the top level in a balanced combination with experienced pros for many years. Our team will benefit from having Peter Bosz as our coach," declared Rolfes. "Particularly at Ajax, he demonstrated he can improve young players, build teams and also compete on the European stage."

From the 2027/28 season, the Women’s Bundesliga will be organised by an independent league association. Following the unanimous decision taken at the DFB Bundestag (national conference) on Friday afternoon, the league’s separation from the DFB is now official.
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The next home fixture is here: Following the winning start to the UEFA Europa League against NK Celje, the Werkself host RB Leipzig at the BayArena on matchday 4 of the 2026/27 Bundesliga campaign. The match on Sunday, 20 September, kicks off at 15:30 CEST. At the pre-match press conference, head coach Carles Martínez spoke about the qualities of the opposition and the work being done to improve his team’s performance. The Spaniard also provided updates on Ibrahim Maza and Montrell Culbreath.
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Following the Bundesliga clash against RB Leipzig (Sunday, 20 September, 15:30 CEST), some of the Werkself first team players will be heading off for the first international break of the season. Here is an overview of the Bayer 04 players called up for their national teams and all the details of their upcoming matches.
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A special visit to the BayArena: 222 members from volunteer fire brigades in Leverkusen, the Rheinisch-Bergisch district and the Oberbergisch district watched the Werkself’s 2–0 home win over Slovenian champions NK Celje live in the stadium. Bayer 04 had invited them to the 2026/27 Europa League opener as a thank-you for their tremendous dedication. They watched the match together in Block F4.
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