
"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."

The men's clothing retailer LERROS will remain the official fashion and premium partner of Bayer 04 for the current season. As in the past, LERROS will provide the club's men's team, coaching staff and management with high-quality clothing for international trips.
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“Diaby! Diaby! Diaby!” was the cry around the BayArena as the Werkself danced in front of the north stand following their 4-0 win over Union Berlin. Captain Edmond Tapsoba gave his new (and old) teammate a friendly shove forward to take in the acclaim from the fans. The returning Frenchman was typically reserved in thanking the supporters but was clearly emotional about what was happening.
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Bayer 04 produced a dominant and impressive 4-0 win over Union Berlin as they picked up three points in their first home game of the 2026/27 Bundesliga campaign. Exequiel Fernández opened the scoring after only 41 seconds, with Facundo Medina doubling the lead before the half-hour mark. Patrik Schick and Ibrahim Maza continued the procession in the second period, in which Moussa Diaby came on for his first Leverkusen appearance for over three years.
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The Bundesliga is back at the BayArena this Saturday as Bayer 04 play their first home game of the 2026/27 campaign against Union Berlin (15:30 CEST). Moussa Diaby could make his second debut for the Werkself following his return to Leverkusen – and it would be an ideal fixture for the Frenchman. Here’s all you need to know ahead of the encounter in our matchday news.
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