Beautiful joined the German champions at the end of the season.
The veteran defender had joined the Romaní before this crusade as a loose agent after a contract in Atlético de Madrid.
Hermoso told Bayer’s website: “I played against this team in 2022-2023. They were two very emotional games, in which neither team gave anything away, just like in Madrid a week ago. I am looking forward to aiming for big goals with Leverkusen. Everything is ready here for a successful season on the pitch.”
Simon Rolfes, the sports director of Bayer Leverkusen, welcomed Hermos Mario.