Bayer Leverkusen midfielder Gonzalo Castro will join Borussia Dortmund next season after agreeing a four-year contract.
Borussia Dortmund has begun its preparations for next season with the signing of Bayer Leverkusen midfielder Gonzalo Castro.
The 27-year-old has signed a four-year deal at Signal Iduna Park after opting to leave Leverkusen following 286 Bundesliga appearances, joining a Dortmund side set for a major rebuild after Jurgen Klopp's departure.
Castro helped Leverkusen secure a UEFA Champions League qualifying place on Saturday – the final day of the campaign – but has chosen to join Dortmund, which will be playing in the Europa League.