
There was a change of personnel at the hosts at the start of the season: The club management at Mainz opted to change coaches after the second Bundesliga matchday. Achim Beierlorzer had to go after two defeats in the opening games and assistant coach Jan-Moritz Lichte took over the helm at Mainz 05. The former Werkself assistant coach under Sascha Lewandowski and Sami Hyypiä is looking to get the team back to winning ways – his opposite number Bosz obviously has something to say about that. Mainz have a lot of quality in their squad. It’s down to us to see that it takes another week before that is evident on the pitch,” the Dutchman declared.
In addition to Paulinho, who continues his rehab training following his torn cruciate, Bosz will have to manage without other players following the international break: Summer signing Santiago Arias suffered a broken leg and complex ligament damage to his ankle in a World Cup qualifier with Colombia and is set to be out of action for around six months.
The 56-year-old will also be without the services of Patrik Schick, who is struggling with a muscle injury. With Florian Wirtz, who was substituted in the middle of the first half of the Euro qualifier for the Germany U21s against Bosnia-Herzegovina, there is no evidence of a structural injury to his stomach muscles. The 17-year-old is already on the road to recovery. “But he probably won’t be available for us against Mainz,” said Bosz
In addition, Tin Jedvaj will also most probably have to miss out. The defender was not in the squad for Croatia’s 2-1 defeat against France on Wednesday night due to illness. The results of a coronavirus test proved to be negative and Jedvaj is now feeling better again.
In accordance with the regulations, the players returning from international duty undertook coronavirus tests at the BayArena on Thursday morning. Another round of tests will be performed on Friday morning. If the results are negative then the players can then take part in training and join the Bayer 04 group to travel to Mainz to hopefully play on Saturday and help secure the sixth Bundesliga win in succession against Mainz 05.
Match information:
Broadcasters: Sky and Werks11 Radio (bayer04.de)
Referee: The match officials will be announced on the day the game
Attendance: 250


A fresh look for the BayArena: The Bayer 04 stadium will have new seating in the form of folding seats for the 2026/27 campaign that will ensure significantly improved seating comfort and simplified movement within the rows of seats. As part of routine replacement after 17 years, fans of the Werkself were able to purchase the existing seats, used to witness the first German league title in the club's history. In addition, a large proportion of the seats will be donated to charitable projects, primarily in the local region. Bayer 04 fans can look forward to new, functional folding seats for the season opener at the beginning of August - still in the club colours of black and red, of course. A glimpse at the BayArena during the refurbishment.
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On Monday evening, 8 June, around 250 people came to the Bürgerhaus Baumberg at the invitation of Bayer 04 to find out details of the new plans for the campus on Alfred-Nobel-Straße at an information event. More compact, greener and with many advantages for Monheim am Rhein - those are the aims. There were lively discussions for around three hours and some misunderstandings were cleared up.
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Werkself player Montrell Culbreath and Bayer 04 loanee Francis Onyeka are part of Germany's final squad for the U19 European Championships this summer. The tournament is in Wales from 24 June to 12 July.
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When Malik Tillman arrived at Bayer 04 Leverkusen from PSV Eindhoven last summer, he did more than just add attacking midfield strength to the team — he reconnected the club with a unique and understated American lineage that stretches back more than three decades.
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Bayer 04 are away to third-division club SV Wehen Wiesbaden in the first round of the 2026/27 DFB Pokal. That was the outcome of the draw on Saturday night, 6 June, at the German Football Museum in Dortmund. The Werkself first round tie will be played between 21 and 24 August. The exact date has yet to be finalised.
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