Chelsea delivered a dominant display at Villa Park, with Joao Pedro scoring a hat-trick and Cole Palmer adding another goal to secure a comprehensive 3-0 victory over Collymore's former team.
Collymore, who witnessed the game from the stands, took to social media to praise the visitors. He wrote: 'No complaints here. Filleted by better players playing through several gears rather than one, wonderful individual performances backed up with high press, discipline and enterprise. Best team performance I've seen at B6 for some time. Well done, Chelsea.'