AC Milan have confirmed that midfielder Valter Birsa is expected to face a spell on the sidelines after suffering a thigh injury.
The 27-year-old had to be replaced in the first half of his team's 2-2 draw with Livorno and will miss their upcoming fixtures with Ajax, Roma and Inter Milan.
"Birsa suffered a right thigh injury in last Saturday's match with Livorno," the club confirmed in a statement.
"A recovery time will be given in the coming days."
Milan host Ajax in the Champions League on Wednesday.