If you have defensive worries in terms of aerial ability, the last thing you want is to encourage crosses from out wide. No matter how well you mark in the box it only takes one great cross to undo all that hard work. Look at the Mignolet save at the end, Benteke had been marked out of the game virtually, yet one slip up and he should have got Villa a point. It's strange to say this as I think he's a massive s***house of a footballer, but I thought we missed Downing's defensive input yesterday. Say what you like about him, he always put a shift in to cover his fullback. I don't mind us trying to sit on a lead, but the formation can't stay as that 4-3-3. I thought the Cissokho sub made sense defensively, but the formation didn't change.