AC Milan head coach Stefano Pioli is battling yet another injury crisis which has made the first game after the international break against Empoli look rather more daunting. There has been an influx is injuries to key players as Theo Hernandez, Davide Calabria, Sandro Tonali and Mike Maignan have all reported problems in recent days, something which is not good news for Pioli ahead of a vital stretch of games.