
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.”

This evening was deeply moving: At a really special setting, Bayer 04 exclusively presented the specially produced documentary ‘Fierté Burkinabè’ ("Burkinabe Pride") about Edmond Tapsoba on Tuesday. For the preview at the BayArena, the parents of the Werkself player and other close companions travelled all the way from his African homeland Burkina Faso. The 45-minute film shows Tapsoba's extraordinary career from his beginnings in Ouagadougou to Leverkusen as well as the work of his foundation "Fondation Edmond Tapsoba", with representatives from Burkina Faso also present. Fans can watch the documentary free of charge on Werkself TV and YouTube from Wednesday night at 20:00 CEST.
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Bayer 04 have signed left-back Carolin Simon from champions Bayern Munich for the coming season. The 33-year-old former Germany international, who played for Leverkusen from 2013 to 2016, has signed a contract to 30 June 2028.
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Bayer 04 Women have strengthened for the coming season with the signing of Lobke Loone. The 23-year-old Dutch striker joins from Utrecht on a contract until 30 June 2028.
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The Werkself returned from the near one-month break in the Google Pixel Women's Bundesliga with a convincing victory at home. Roberto Pätzold's side beat SC Freiburg 4-1 on Sunday afternoon, with goals from Katharina Piljic, Estrella Merino Gonzalez, Cornelia Kramer and Carlotta Wamser ensuring a 13th win of the season at the Ulrich-Haberland-Stadion. The Black and Reds, who are now on 40 points, move up to fourth place at least overnight.
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