
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.”

The German Football Association (DFB) has officially recognised Bayer 04 as a centre for the development of female talent for the 2026/27 season. The club was awarded that role on 1 January 2026, and this status has now been renewed.
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Bayer 04 Leverkusen have sold young defender Andrea Natali to AZ Alkmaar on permanent terms. The 18-year-old Italian was on loan at the Dutch club last season, where he mainly played for the reserve team in the second division.
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Bayer 04 Leverkusen have loaned new signing Luca Erlein to newly promoted FC Energie Cottbus for the 2026/27 season. This will give him the opportunity to play in Bundesliga 2. The club signed the 19-year-old right-back on a permanent basis last week, on a contract to 30 June 2030.
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Werkself TV shows the highlights of the 3-1 victory in the friendly match at Kickers Offenbach...
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It’s always nice having your best friends round for a birthday! Bayer 04 made a guest appearance at Stadion am Bieberer Berg as part of Offenbacher Kickers’ 125th anniversary celebrations, and nearly 1,500 Werkself supporters accepted the invitation to this historic venue, joining the Offenbach crowd in celebrating the more than 45-year friendship between the clubs. On the pitch, the Werkself secured a 3–1 victory in the friendly against the fourth-tier Regionalliga side. The Leverkusen goals were scored by Christian Kofane (38’), Jonas Hofmann (48’) and Afonso Moreira (81’). Keanu Staude had put the hosts ahead in the first half (11’).
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