Ahead of the clash with the already safe Mainz, the Dutchman declared: "We don't need to think about what's happening on the pitch at Gladbach. We have to win our game. And then we'll see if that's enough in the end."
In the best-case scenario, the Werkself will be happy to repeat the drama of the final matchday of the 2018/19 league campaign: Back then, the Black and Reds qualified for the Champions League with an emphatic 5-1 win against Hertha Berlin and a 2-0 defeat for Gladbach against Borussia Dortmund. "We showed then what is possible," said Bosz.
Good news: Ahead of the game with Mainz, the 56-year-old coach can select his team from his whole squad with the exception of Aleksandar Dragovic who is currently serving a one-match ban. Karim Bellarabi and captain Lars Bender returned to training with the team on Friday following injury. Bosz explained: "We'll see who plays tomorrow. Our only interest is definitely winning the match."
The team coached by Achim Beierlorzer have already secured their top-flight status with two recent wins at Dortmund (2-0) and fellow relegation candidates Werder Bremen (3-1). Bosz does not believe Mainz will let the season end with a whimper. The Werkself coach commenting on tomorrow's opponents: "They played very well against us in our narrow win earlier in the season (1-0 ed.). Mainz have some interesting players and a good team."
Match information:
Broadcasters: Sky and Werkself Radio (bayer04.de)
Referee: The referee will be announced on the day of the game


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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