
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.”

Issa Traoré is moving from Bayer 04 Leverkusen to Slovakian top-flight side AS Trencin. The club has loaned the centre-back out for one year to this year’s ninth-placed team in the Slovakian league.
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Assistant coach Remzi Kahraman is leaving the Bayer 04 Women’s team with immediate effect to take up a new challenge abroad. The club has agreed to the 31-year-old’s request to leave, although his contract was originally due to run until 2027. A decision on his successor will be announced shortly.
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At the U19 European Championship in Wales, the Germany U19 national team lost their third and final group match 4-0 to Spain. Several regulars, including Bayer 04 players Montrell Culbreath and Francis Onyeka (on loan to SV Elversberg), who had combined for four goals and assists in the two previous victories, did not feature,. Germany had already secured their place in the semi-finals with a game to spare.
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Two weeks into the preseason, the Bayer 04 Women have secured their first victory. Coach Roberto Pätzold’s team won their first friendly 2–0 against Bundesliga newcomers Mainz 05. In front of 160 spectators at the Kurtekotten Performance Centre, the two summer signings, Maja Sternad (80’) and Justine Brandau (90’), scored for the Black and Reds.
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