
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.”

Video games manufacturer Electronic Arts (EA), together with the Deutsche Fußball Liga (DFL), has announced the six nominees for the February 2026 Bundesliga Player of the Month award. Not one, but two Werkself players are on the list in Edmond Tapsoba and Alejandro Grimaldo. Supporters of the Black-and-Reds have from now until midnight on Sunday 8 March to vote!
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The German Football League (DFL) has announced the three candidates for Bundesliga ‘Rookie of the Month’ for February. Among the candidates is Werkself player Jarell Quansah. Fans of Bayer 04 can vote for their favourite on the Bundesliga app from now until Thursday, 5 March (23:59 CET).
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Bayer 04 have once again significantly stepped up measures against the unauthorised resale of tickets and, as a result, reallocated a certain number of season tickets to fans on the waiting list. In doing so, the club wants to send a clear message: Tickets belong in the hands of those who have purchased these tickets legitimately and obtained them via official Bayer 04 channels and who support the Werkself. At the same time, the tickets should be available at the regular fixed prices.
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Bayer 04 will have to manage without Brazilian player Arthur for the next few weeks. The full-back tore a ligament in his left ankle in yesterday's Bundesliga match against Mainz 05 (1-1).
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