Aston Villa ended an outstanding week with a damp squib after their goalless draw against Manchester United on Sunday. On Wednesday night, Unai Emery produced one of the great nights for the football club in the Champions League when Aston Villa beat Bayern Munich. But they couldn’t re-create that high against a Manchester United side sitting in the bottom half of the Premier League table and their manager under serious pressure. In truth, Villa and Manchester United deserved to finish goalless because it was a pretty cagey game and one of very few chances. Not many stood out, in terms of stro…