18-year-old attacking midfielder Konstantinos Karetsas has moved from Belgian club "Genk" to "Borussia Dortmund".
Idman.Biz reports that the transfer was announced on the official website of the German team.
The player has signed a five-year contract until the summer of 2031.

Last season, Karetsas played 34 games in the Belgian league, scoring no goals but making 11 assists. The Greek national team player scored two goals and made five assists in the 2025/2026 UEFA Europa League.
According to information released in the media, the transfer fee for Karetsas to "Borussia Dortmund" was 30 million euros. Italian club "Milan" had previously shown interest in the player.