
"Mario Hermoso is an experienced player on the international stage and, in addition to playing as a central defender, he is a very capable and organised left back," said Bayer 04 sporting managing director Simon Rolfes in describing the 1.84 metre tall defender. "Mario will also bring additional versatility to our defence and will compensate very well for the absence of Jeanuel Belocian."
Hermoso knows Bayer 04 well having played the Werkself twice in Champions League games in 2022/23. "They were two highly emotional games with neither side giving anything away exactly like it was in Madrid a week or so ago," said Hermoso, who has made five international appearances for Spain. "I'm very much looking forward to aiming to achieve big targets with the Werkself. Everything is set up here for a successful season on the pitch."

Werkself-TV shows the highlights of Bayer 04 Women's 2-0 win against Hamburger SV on Matchday 9 of the 2026/27 Google Pixel Women's Bundesliga.
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After back-to-back away defeats, Bayer 04 Women now face their penultimate home fixture of 2026 as they welcome Hamburg to the Ulrich-Haberland-Stadion on Saturday (14:00 CET) seeking three important points in the Google Pixel Bundesliga.
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It was a UEFA Europa League fixture that came down to fine margins as Bayer 04 ultimately ended up on the wrong side of a one-goal game at home to Marseille on Thursday – the Werkself’s first loss of the European campaign. However, Leverkusen are still well on track to reach the knockout rounds with nine points on the board at the league phase’s halfway stage. Still, Carles Martínez and his team want to learn from the loss heading into Sunday’s Bundesliga derby at Köln.
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Several Werkself players are set to represent their national teams during the final international break of 2026. Here’s an overview of who has been called up and what matches they will face in November. This article will be updated regularly.
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Werkself TV shows the highlights of Bayer 04's 0-1 loss against Olympique Marseille on Matchday 4 of the 2026/27 Europa League season...
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