Eguinaldo, recently linked with Roma, has sustained an injury.
During the Europa League qualifying match between Shakhtar Donetsk and Panathinaikos, the Brazilian winger, who came on in the 73rd minute, was forced to be substituted a minute later.
He likely suffered a left flexor muscle problem.
Eguinaldo left the pitch, but the extent of the injury will be assessed in the coming days.
