
"We have signed a very experienced player in Santiago Arias who will quickly be able to help us," declared the sporting managing director Rudi Völler."This transfer is important for the structure of our team due to the large number of fixtures over the coming weeks."
Bayer 04 sporting director Simon Rolfes has worked hard over recent weeks to bring in Arias and he sees in the Colombian a player, "who has proved himself at a top European club. The quality of the Spanish league is well known," said Rolfes, "as is Atlético Madrid's. Santiago will be a key player in our team with his footballing ability and his mentality.”
For the right-footer, who will wear the number two shirt for the Werkself, the move to Germany is "a fantastic opportunity to take on a new challenge after two great and successful years in Madrid. Bayer 04 Leverkusen are one of the best clubs in the Bundesliga with a very good reputation in Spain. I experienced how football's played here with Atlético in the Champions League," Arias explained. "That's why I'm very much looking forward to the German league and my new teammates. We have a team that can go a long way – and I want to help achieve that."


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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