Milan announced today, Tuesday, that Algerian midfielder Ismael Bennacer will be out for at least six months due to undergoing surgery on his right knee. Milan stated that Bennacer underwent surgery this morning in Lyon to treat a cartilage injury in his right knee. Bennacer, who is 25 years old, left the field due to injury just 17 minutes into the match against their rival Inter Milan. OFFICIAL | Milan's Ismael Bennacer has undergone an arthroscopy of his right knee in Lyon and he will be out for six months.