Watch the highlights and folow reaction of match week four in the Champions League as Aston Villa lose to Club Brugge and Arsenal beaten by Inter Milan.

Inter snatched a 1-0 victory over Arsenal in the headlining act of Wednesday's UEFA Champions League action, handing the English side their first defeat of the competition in the process. The game's lone goal came in first-half stoppage time when Hakan Calhanoglu converted a penalty that was awarded after Arsenal's Mikel Merino was called for a handball.

TNT Sports pundit Martin Keown slammed the rules that led to Arsenal conceding a controversial penalty in their UEFA Champions League defeat to Inter.