Giannis Konstantelias Suffers ACL Tear on Borussia Dortmund Debut

Borussia Dortmund have been dealt a crushing blow on the injury desk: summer signing Giannis Konstantelias tore his anterior cruciate ligament on his Bundesliga debut for the club, an injury that will keep him out for the long term and has already ruled him out of Greece's international fixtures.

A debut to forget

Konstantelias went down during his first Bundesliga appearance in a Dortmund shirt, and scans have since confirmed the worst-case scenario for the 23-year-old midfielder. The severity of an ACL rupture means an absence measured in months rather than weeks, and Dortmund's medical staff will now map out a rehabilitation programme before any return date is put on his season.

The timing compounds the disappointment. Konstantelias had worked his way into the matchday picture and was handed his league debut as a reward — the kind of milestone that usually marks the start of a settling-in period at a new club. Instead, the Greek international's first taste of Bundesliga football ended with a knee injury that will define the first half of his campaign.

Greece move on without him

The injury has immediate international consequences. Greece coach Ivan Jovanović named his squad for the Nations League meeting with Germany without Konstantelias, confirming the midfielder had suffered "a severe ACL tear during his recent Bundesliga debut for Borussia Dortmund". For a Greece side building around a young core, losing a player of his profile for the entire window — and well beyond — is a significant setback.

What it means for Dortmund

Dortmund return from the international break with their midfield options suddenly thinner. Konstantelias joins a treatment room that has already tested the club's depth this season, and the coaching staff will need to reassess the rotation plan for the packed autumn schedule that follows the extended three-week window.

For the player himself, the road back is a familiar but brutal one: surgery, then months of progressive rehabilitation. Dortmund are expected to confirm a timeline after the operation, but the realistic target for Konstantelias is a return in the second half of the season. OneLightScore will track his recovery in our weekly injury updates.