Chelsea took a big step towards the Champions League last 16 on Tuesday with a 2-0 win at AC Milan which took them top of Group E and left the Italians wondering what might have been. Graham Potter's side took control at a packed San Siro against a Milan team who had to play most of the match with 10 men after Fikayo Tomori was controversially handed an early straight red card. The decision to send off Blues man Tomori for fouling Mason Mount in the area in the 18th minute turned the match on its head as Milan had matched Chelsea in the opening stages.