Aston Villa dropped valuable points in the Premier League on Saturday after their 2-2 draw against Chelsea. Unai Emery might be looking at the positive side of things, but that was a performance to forget from the team. The worst thing about it all was that, as soon as Aston Villa conceded the goal, you just knew and could sense the comeback was on. This wasn’t a case of being negative or having that type of mindset, but after going 2-0 up, the home team were second best and it was just a matter of time before Chelsea knocked that door down. When it did, the Champions League-chasing team could…