Four things we learned after Aston Villa cruised into the quarter-finals of the Europa Conference League with a 4-0 victory over 10-man Ajax. Unai Emery’s side bounced back perfectly from the 4-0 defeat to Spurs. It was a comfortable victory for Villa with the hosts being in control throughout the tie. The round-of-16 match pitched two of the favourites for the tournament up against each other early on. After a 0-0 draw in Amsterdam, Villa were favourites to go through at Villa Park. However, Emery’s side were ruthless against the young squad led by Jordan Henderson. Ollie Watkins put Villa 1-…