The 25-year-old suffered ligament damage to his right knee, ANSA news service reported.
Inter are fifth in Serie A on 43 points, only a point and two places behind a resurgent Milan.
Get the best features, fun and footballing frolics straight to your inbox every week.
Thank you for signing up to Four Four Two. You will receive a verification email shortly.
There was a problem. Please refresh the page and try again.