Stefan Savic has suffered a setback as he bids to return from a hamstring injury.
The Atletico Madrid centre-back has been out of action since Montenegro's 0-0 draw against Bulgaria in Euro 2020 qualifying on October 11.
[📋] INJURY UPDATE— Atlético de Madrid (@atletienglish) November 20, 2019
Stefan Savic has suffered a relapse of the grade II injury to the left biceps femoris muscle that he picked up last month.
Atleti announced Savic, who was substituted after 39 minutes of that match, had suffered a hamstring issue but did not offer an estimated recovery time.
And the club revealed in an update on Wednesday the defender has "suffered a relapse of the grade II injury".
Savic has undergone tests and, according to Atleti's short statement, "is pending response to treatment".