Paris Saint-Germain coach Thomas Tuchel revealed midfielder Marco Verratti had suffered another injury setback in a blow to the Ligue 1 champions.
The Italy international, 26, returned to training on Monday after being sidelined with a sprained ankle sustained last month.
That was a boost to PSG, who are set to be without Neymar until April, ahead of their Champions League last-16 tie against Manchester United beginning next week.
But after Verratti missed his side's extra-time win over Villefranche in the Coupe de France on Wednesday, Tuchel revealed the midfielder had suffered a fresh injury.