Zlatan Ibrahimovic is a major doubt for Milan's opening Serie A game of the season at Cagliari later this month.
The Swede twisted his ankle in Sunday's 2-2 friendly with Malmo and is expected to be sidelined for two weeks as a result.
The international striker has undergone a series of tests which confirmed a distortion trauma.
The Italian champions open their campaign away to Cagliari on Saturday 27 August.
Think you know your Italian football? Share your knowledge, tips and comments to win cash prizes in OLBG's tipster competition - £11,000 to be won monthly!