Head coach Peter Bosz reflected on that ahead of the game: "I don't think we can surprise each other any more. Above all, we saw in Berlin that Union are good opponents who are powerful and direct." The Werkself won the game in the second half of the season at the Alte Försterei Stadium 3-2 in the fourth minute of added time.
The team from Köpenick have been the most impressive of the newly promoted teams in the current Bundesliga campaign and they already have 30 points. The team coached by Urs Fischer have beaten Germania Halberstadt (6-0), Bundesliga side SC Freiburg (3-1) and SC Verl (1-0) in the DFB Cup. Now the Berliners are in the second cup quarter-final in the club's history against the Black and Reds, who are also enjoying a very successful this term.
Bosz sees one reason for the improvement of the Werkself in the second half of the season in the flexibility of his team – both from game to game as well as within a match. "I expect my players to read the game. Of course, we train every day and discuss everything. But in a game it can always happen that something else is suddenly required," said the Dutchman who will probably have to make do without captain Lars Bender for this game in addition to long-term injury Kevin Volland (ankle). Bosz: "We’re training this afternoon. But I don't think Lars will be able to join in."
Across all competitions, the Werkself have recentlyclocked up nine wins and one draw with only the Bundesliga clash at TSG Hoffenheim ending in defeat (1-2). Bayer 04 are not short of confidence. "If you also see how we played in those games – then it was very mature. You can say we've become more solid," said Bosz.
One unavoidable issue in professional football in recent weeks has been the debate about defamatory material in Germany's football grounds. Bayer 04 have adopted a clear position in this respect: The club, according to press officer Dirk Mesch, have great trust in their own fans as well as the supporters of Union Berlin that no such insulting banners will be seen at the BayArena. Criticism should be possible but always on a suitable and constructive basis. Bayer 04, Mesch continued, is in close contact with the DFB and fan representatives. In the event of any relevant incidents, Bayer 04 will adhere to the FIFA three-stage plan.
Match information:
Attendance: Bayer 04 expect 20,000 supporters at the BayArena
Broadcaster: Sport1, Sky (TV), Werkself Radio (bayer04.de)
Referee: Benjamin Cortus (Röthenbach)

Bayer 04 Leverkusen have appointed Carles Martínez Novell as the new head coach. The 42-year-old Spaniard worked for FC Toulouse in the French Ligue 1 until the end of the season. Martínez finished last term in ninth place with the club from the south of France. He will take over the Werkself on 1 July 2026 and has signed a contract to 30 June 2028. Martínez, whose contract with Toulouse expires at the end of the month, succeeds Kasper Hjulmand at Leverkusen, who is leaving the club after one season.
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Bayer 04 plans for the 2026/27 pre-season continue to take shape. The Werkself will kick off the new season in mid-July with the return to the training ground. The highlight will be the official season opener on 8 August at the BayArena, including a friendly against La Liga club Sevilla. Friendlies in Germany will take the team to neighbouring Monheim, Offenbach and Jena.
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Strengthening the Bayer 04 Leverkusen youth teams: Konstantinos Kotsifakis will join the Werkself from Bundesliga 2 club Hertha Berlin for the 2026/27 season, where he will be a permanent member of the Leverkusen U19 coaching set-up. The German-Greek will also take on an operational role in coaching the Bayer 04 Future Team. The 29-year-old was most recently head coach of the U17s at Hertha Berlin.
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Another award for the Bayer 04 head groundsman and staff: After coming top in the 2021/22, 2022/23 and 2024/25 seasons, the BayArena pitch came second in the Bundesliga Pitch of the Year ranking for the 2025/26 season. VfL Wolfsburg secured the top spot this year, with TSG Hoffenheim in third place.
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Opening opponents, derby weekends, the opponents in the season finale: This information and more will be available to Bayer 04 fans on Thursday, 2 July, when the 2026/27 Bundesliga fixture list is published.
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