Ragnar Ache was forced to leave the pitch after only 26 minutes as Greuther Fürth fell to FC Hansa Rostock 2-0.
The Clovers confirmed on Wednesday that the attacker had suffered a capsule injury and would be sidelined until further notice.
As a result, it is uncertain whether the 24-year-old, who was loaned out from Eintracht Frankfurt for a season, will remain on the field until the end of the season. So far, the striker has not missed a game and has seven goals and four assists in 20 games. He made the starting lineup 21 times.
Ache's loan at Furth ends at the end of the season, and it remains to be seen whether he can continue with the club in the long term. The scenario is difficult since Eintracht Frankfurt would only be willing to sell the player if they get a very good offer.
Furth would have financial difficulties as a result, as Ache is a sought-after player on the transfer market. His contract in Frankfurt expires in 2025.
Fürth has worked hard this season to stay in the league and is currently on the verge of staying in the 2nd Bundesliga.