
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.”

Bayer 04 will round off their 2026/27 pre-season preparations with a friendly against Premier League side Newcastle United. The match against the side featuring German internationals Malik Thiaw and Nick Woltemade will take place on Saturday 15 August (kick-off: 4 pm German time/3 pm local time) at St James’ Park. Werkself-TV will stream the match live in full and free of charge after logging in from 3.50 pm...

After the 2-1 defeat at Premier League club Nottingham Forest the night before, it was straight back to work for the Werkself at midday on Thursday with an intensive training session in hot temperatures at the hosts' training ground.
Show more
The Werkself suffered a first defeat in the current pre-season fixtures. The sixth friendly of the summer ended in 2-1 reverse at Premier League Nottingham Forest. The English side took an early lead (4’) but Patrik Schick levelled just after the half-hour mark (32’). Nothing much happened after that, and the match looked set to end in a draw. However, the hosts managed to score the winning goal late on (90').
Show more
Bayer 04 Leverkusen have loaned U19 midfielder Jeremiah Mensah to Dutch second-tier side Roda JC Kerkrade for one year. The 18-year-old Germany youth international has a long-term contract at the club to 2031.
Show more
Bayer 04 Leverkusen Fußball GmbH has taken note of the final, non-binding statement issued by the Bundeskartellamt regarding the 50+1 rule and its application, and will now examine it carefully.
Show more