By Ewan Murray The second half of this week’s Champions League action takes place this evening as we hit the halfway stage of the league phase. There are a number of European giants taking to the field tonight, with gargantuan duels hosted at the Parc des Princes and San Siro. Aston Villa are also aiming to maintain their perfect record as they visit Belgium. The recently reformatted and expanded Champions League has thrown up some shocks already – Lille have beaten reigning champions Real Madrid, for example – and some more may lie in wait across the continent this evening. Here are 90min’s p…