
Between 2014 and 2016 Maas, who played for Arminia Bielefeld and Hertha Berlin in the Bundesliga plus MSV Duisburg in the second division, was assistant coach to the current Bayer 04 head coach Peter Bosz. They were in charge at Dutch club Vitesse Arnhem for a total of 62 games in the Eredivisie. “In Rob Maas, we’ve appointed an innovative and strong-minded assistant coach who fits in really well here. He knows the Bundesliga and has already worked successfully with Peter Bosz. Rob will provide new ideas,” declared sporting director Simon Rolfes.
For Rob Maas, Bayer 04 are “a highly ambitious and very attractive club. That’s not just the perception in Germany but Leverkusen also have an outstanding reputation across Europe,” said Maas. “To be able to work with fellow coaches in developing an extremely exciting team is a fantastic challenge I’m really looking forward to.”

Bayer 04 host Hamburg at the BayArena for the first time since September 2017 on the final day of the 2025/26 Bundesliga season on Saturday (15:30 CEST). HSV are safe in their first campaign back in the top flight after back-to-back wins, but Leverkusen are unbeaten in their last 19 games against promoted teams as they go for the victory they need to have a chance to qualify for the UEFA Champions League. There’s also heavy discounts on food and drinks at the BayArena. Here’s all you need to know ahead of the Matchday 34 fixture in our matchday news.
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As well as previously confirmed departures, Bayer 04 Women will also say goodbye to Vanessa Haim and Shen Menglu before Sunday’s final game of the season at home to Werder Bremen as the pair leave Leverkusen upon the expiration of their contracts.
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The last competitive match of the 2025/26 season takes place at the BayArena on Saturday 16 May (kick-off 15:30 CEST), where Hamburger SV are the visitors. At the pre-match press conference, head coach Kasper Hjulmand discussed the mindset and the approach for the crucial final game against HSV, among other topics.
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Hamburger SV already secured another season of Bundesliga football on Matchday 32. Following a brief dip in form in the spring, it means they've comfortably achieved their target for the season. HSV now round off their campaign with a trip to the BayArena on Saturday 16 May (kick-off: 15:30 CEST on Werkself Radio), where two of the club’s key players may well be making their final appearance for their side. The lowdown on our next opponents.
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