
For the Bayer 04 CEOs Fernando Carro de Prada and Michael Schade "This partnership is both fitting and ambitious: On the one hand, an international company with over 50 years experience of health-oriented, efficient weight training founded on a scientific basis with in-house machines represents an extraordinary success story. On the other hand, a top German club active all over the world able to use the expertise of the new partner directly to achieve ambitious sporting targets," said Schade.
Michael Antonopoulos, CEO and co-owner of Kieser Training, sees the commitment to a Bundesliga club " as a unique opportunity to associate our sporting concept with such a successful club and to further extend the use of weight training. We are looking forward very much to a long-term and successful partnership."
And for sporting director Rudi Völler the long-term cooperation with Kieser Training represents an ideal development: "Having established themselves as a globally respected and recognised professional provider of weight training since 1967, they have impressively demonstrated their expertise," said Völler. "Kieser Training is a brand established in the minds of people and is synonymous with effective and healthy muscle development. A real constant in a market shaped by temporary fitness fashions and thereby a great partner we can look forward to working with very much here at Leverkusen."
Founded in 1967 by the Swiss Werner Kieser, the weight training chain currently has 158 studios with 283,000 members, which are partly operated as franchise studios. With around 1,700 employees in Germany, Switzerland, Austria and Luxembourg and Australia, every single Kieser Training studio provides professional training management and support as well as a consistent offer based on continuing scientific research. This creates a company personality of unmistakable character with the public.

Midfielder Ruby Grant is leaving Bayer 04 Leverkusen and joining Portuguese runners-up Sporting CP a year before her contract expires. The 24-year-old has been at the Werkself since January 2025.
Show more
Bayer 04 have loaned Brazilian full-back Arthur to Bundesliga side Werder Bremen for one year. Arthur Augusto de Matos Soares – the full name of the right-back – has a contract with Leverkusen until 30 June 2031. At Werder, the 23-year-old is expected to make an impact and help the long-established club further consolidate their position in the Bundesliga.
Show more
Bayer 04 have loaned defender Jeanuel Belocian to Spanish top-flight side Racing Santander. The 21-year-old defender joins the team currently ninth in La Liga until the end of the current 2026/27 season. Belocian’s contract remains valid until 30 June 2029. Last season, the 1.86-metre-tall U21 international was loaned to VfL Wolfsburg for six months.
Show more
He knows the dressing room, the pitch and the club. But, above all, he knows the feeling of playing for the Werkself at the BayArena: Moussa Diaby is back in Leverkusen after three years. The lightning-fast winger has signed a contract with Bayer 04 until 2031 and he will once again wear the number 19 jersey. The left-footed player previously played for the club from 2019 to 2023, having arrived in the Rhineland from his native France as a promising young talent and eventually leaving the club – having established himself as one of the Bundesliga’s best attackers – to join Aston Villa in the Premier League. Now he has returned to Bayer 04 from Al-Ittihad FC in Saudi Arabia.
Show more