
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."

In mid-August, the Werkself will set off on a four-day trip to England to play their final two friendly matches of the 2026/27 pre-season against Premier League clubs Nottingham Forest and Newcastle United. The match in Nottingham against the Tricky Trees is on Wednesday 12 August at 20:45 CEST (19:45 BST) at the City Ground. The game against the Magpies in Newcastle is on Saturday 15 August at 16:00 CEST (15:00 BST) at the atmospheric St James’ Park. Details on ticket sales for both matches.
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Black and Red talent development at the highest level – even off the pitch: Apprentices Jule Suermann, Leandra Bellia and Julia Niederheide have successfully completed their two- or three-year apprenticeships at the club. Bayer 04 honoured the trio at the BayArena on Tuesday.
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Following the summer break, most of the players are back in Leverkusen. While two Bayer 04 first-team players are still in action at the World Cup, the players present officially kicked off the new season with fitness assessments. At the Werkstatt, the Bayer 04 rehabilitation and training centre, Robert Andrich, Edmond Tapsoba and the rest of the squad worked up quite a sweat in the sweltering summer heat. New signings Afonso Moreira and Kennet Eichhorn also successfully completed the day’s sessions alongside their new team-mates.
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The Werkself return tomorrow, Tuesday 14 July (from 11:00 CEST at the BayArena; live stream on bayer04.de, the Bayer 04 app and YouTube), with new head coach Carles Martínez leading his first training session as part of the Bayer 04 set-up. His coaching team comprises a mix of new and long-standing colleagues.
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The FIFA World Cup 2026 in the USA, Canada and Mexico is underway. A total of eight Leverkusen players are taking part in the 23rd World Cup, with 48 teams in the tournament for the first time. Bayer04.de brings you all the latest from Werkself players at the World Cup.
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