Fiorentina defender Gonzalo Rodriguez needs tests amid reports he suffered a facial fracture.
The Argentine received a knock to the eye during the friendly win over Universitario on their South American tour.
According to La Nazione newspaper, the pain is persisting and medical staff will take him in for x-rays.
There are fears he has fractured his cheekbone and eye-socket, so he could require surgery to stabilise it.
Time is of the essence, as Fiorentina face Roma in their opening Serie A match on August 30.