Let’s be brutally honest. Aston Villa is the reason Arsenal failed to win the Premier League title last season. Not Manchester City. In the final weeks of the season, there was a lot of swooning about Pep Guardiola’s mighty army and how much of a juggernaut they are. And of all that is correct. But if the Gunners had defeated Aston Villa at the Emirates – where they were close to imperious – they would have won the title by a point. It is instructive to note that Unai Emery’s men completed the double over Arsenal – the only team to do so last term. In those two matches, Arsenal failed to score…