Manchester United boss Louis van Gaal says he wasn't pleased with first half, but United eventually claimed all three points. Manchester United won for the first time away from home under Louis van Gaal -- their first win on the road in seven months -- but what else did we learn from the 2-1 victory at Arsenal? David De Gea is United's best player "Fortunately we have a very good goalkeeper," said Van Gaal in the aftermath of this crucial win. For all bluster around Van Gaal's bold tactical shift and the calamity afflicting Arsenal's treatment room, were it not for De Gea, United could have been 3-0 down after 21 minutes. The...