Borussia Dortmund have asked the Hellenic Football Federation to manage the minutes of 18-year-old midfielder Konstantinos Karetsas during Greece’s upcoming fixtures, according to SkyGermany.
The German club believe Karetsas has already faced a significant workload for both club and country this season. He has played in three of Greece’s Nations League matches, including the victory over Germany, in which he completed the full 90 minutes.
Karetsas joined Borussia Dortmund from Genk last summer in a transfer worth 30 million euros. The midfielder has quickly become involved at international level, but Dortmund are concerned about the demands being placed on him at the age of 18.
Five days after Greece’s match, Karetsas is due to feature in Borussia Dortmund’s Bundesliga fixture against Werder.