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.”
Werkself-TV shows the highlights of the Bayer 04 women's 1-3 loss against Werder Bremen on the 26th matchday of the Google Pixel Frauen-Bundesliga 2025/26.
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Bayer 04 Leverkusen have agreed a conract extension with home-grown talent Sofie Zdebel by a further year ahead of schedule. The 21-year-old Germany U23 international will stay at the club until 30 June 2028.
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Bayer 04 could only manage a 1-1 draw at home to Hamburg in the final game of the 2025/26 Bundesliga season as they finish in sixth place and qualify for the UEFA Europa League. Patrik Schick missed a first-half penalty before Fabio Vieira put the visitors ahead on the hour. Jarell Quansah’s deflected header in the 79th minute earned a point to finish the campaign.
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Jonas Omlin was given an official send-off ahead of the final Bundesliga game of the season at home to Hamburg. The 32-year-old Swiss goalkeeper joined the Werkself on loan for the second half of the campaign from Borussia Mönchengladbach in the winter.
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