Konstantinos Karetsas will reportedly have to spend several weeks on the sidelines after sustaining an ankle injury during Borussia Dortmund’s 0-0 Bundesliga draw with 1. FC Union Berlin on Saturday.
According to Ruhr Nachrichten, the 18-year-old is expected to be out at least until the next international break in mid-November.
Karetsas returned from Berlin on crutches on Saturday evening, with the exact nature and severity of the injury yet to be determined by the club.