The 29-year-old suffered teh injury in the 3-0 away defeat to AC Milan on Sunday.
Scans revealed tha the Brazilian had ruptured the cruciate ligament in his left knee.
The injury is expected to keep Pinto out of action for around six months.
The 29-year-old suffered teh injury in the 3-0 away defeat to AC Milan on Sunday.
Scans revealed tha the Brazilian had ruptured the cruciate ligament in his left knee.
The injury is expected to keep Pinto out of action for around six months.
