Barcelona confirmed on Wednesday that Philippe Coutinho needs knee surgery after picking up an injury in the 1-1 draw against Eibar.
The Brazil international came off the bench in the second half but was forced off late on after picking up a problem.
Coutinho has since undergone tests which have revealed the 28-year-old requires surgery.
“The tests carried out on the first team player Philippe Coutinho have shown that the midfielder has an injury to the lateral meniscus in his left knee. Treatment will necessitate arthroscopic surgery which will take place in the coming days.