
"We have invited our first team players here today to show the team what Bayer is all about and what our company actually does. The team should experience our scientific work with all their senses today," explained communications director Sonja Diewerge.
The Bayer 04 players spent an hour in small groups finding out about the different work areas of Bayer AG via lectures, films and interactive exhibits. The workshops provided the opportunity to test body scanners or experiment using test tubes to determine pH values.
Heiko Herrlich and Kai Havertz additionally had the chance to get to know their bodies a bit better. With the help of Bayer employees, the Werkself head coach was able to identify his own DNA in an experiment. The youngster Kai Havertz slipped into a so-called ageing suit that enabled the 18-year-old to appreciate the typical limitations experienced by older people such as impaired vision or reduction in strength. In spite of the circumstances, Kai Havertz still showed his above-average talent by demonstrating his ball control.

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.
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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.
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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.
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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.
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