Chelsea midfielder Enzo Fernandez's season is over.
Ole says Enzo has been carrying a groin injury for the past month.
He has now undergone surgery and is expected to be out of action for approximately three weeks. There's hope he will be fit for Argentina's Copa America campaign, which kicks off on June 20.
Enzo has been suffering from an inguinal hernia - a problem that affects the groin region between the lower abdomen and the thigh - for over a month.
Chelsea and the Argentine FA reached an agreement over Enzo's surgery this week.