
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.”

Farid Alfa-Ruprecht is going out on loan from Bayer 04 Leverkusen to Bundesliga 2 side Hertha Berlin. The pacy winger will be at the Berlin club for one year.
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Bayer 04 host RB Leipzig at the BayArena on matchday 4 of the 2026/27 Bundesliga season. The game is on Sunday 20 September with the kick-off at 15:30 CEST. The latest information on ticket sales.
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Bayer 04 host SC Freiburg at the BayArena on matchday 6 of the 2026/27 Bundesliga season. The game will be played between 16 and 18 October. The exact kick-off time has yet to be confirmed. The latest information on ticket sales.
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Starting now, Bayer 04 is launching a carpool portal, WERKSELFgo, allowing fans to get team up and travel together to home and away matches of the men's and women's teams.
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