Inter full-back Aleksandar Kolarov has tested positive for coronavirus, the club have confirmed.
Kolarov returned to San Siro at the start of the week after struggling with unspecified physical problems while away on international duty with Serbia.
He was an unused substitute in a penalty shoot-out defeat to Scotland that denied Serbia a place in the European Championship next year, and was left out of the squad completely as his country drew 1-1 with Hungary in a League B, Group 3 Nations League meeting on Sunday.
The 35-year-old reported for Inter's latest round of medical checks on Monday, and was subsequently diagnosed with Covid-19, which means he will now be forced to spend at least 10 days in quarantine.