
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.”

A round-up of the Werkself training camp in the Weimarer Land, all in one place: in our daily blog you’ll find all the insights and updates from the day. Day four (Wednesday 5 August) is all about training. The day begins with a gruelling open training session – new signing Miguel Gutiérrez also takes part. A second session follows in the afternoon, this time behind closed doors.
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Bayer 04 Leverkusen have signed Spanish left-back Miguel Gutiérrez from Napoli. The 25-year-old has signed a contract with the club to 30 June 2031. Gutiérrez came through the youth ranks at Real Madrid; he moved to Italy a year ago from Girona, and he played a key role for Napoli with 36 appearances. The big Italian club finished last season as runners-up in Serie A.
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New signing Miguel Gutiérrez arrives in Leverkusen having won the Champions League, the Spanish league title and an Olympic gold medal. However, the 25-year-old Spaniard, signed from Napoli, is looking to the future – he wants to write the next chapter of success with the Werkself. Bayer04.de takes a closer look at the skilful, attack-minded left-back, who will wear the number 3 jersey.
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The Werkself's training camp in Weimarer Land all in one place: in our daily blog you'll find all the insights and updates from the day. Day three (Tuesday 4 August) begins with a thorough open session on the pitch. After lunch, some players have media engagements at the team hotel, and then the team come together for a barbecue in the evening.
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