Arsenal fans will love how Chelsea supporters reacted to Courtois performance via Twitter

Did Chelsea make a mistake selling Petr Cech to Arsenal?

Petr Cech was Arsenal's one and only summer signing last year, but he has proved a superb addition to a team in desperate need of a top class goalkeeper.

Chelsea let him leave in the belief they had two, and as Cech was the oldest, he had to go.

Thibaut Courtois was Chelsea's man, and he had earned it, winning a Premier League winner's medal in 2014/15, with Cech sitting on the bench.

Last night the Belgian stopper was in goal as Chelsea slipped to a 2-1 loss to Paris Saint-Germain, and could have done better for Edinson Cavani's winner, beaten in a one on one by the Uruguayan.

It was the sort of goal Chelsea fans have been accustomed to Petr Cech saving over the past decade, offering a presence which Arsenal are currently benefiting from.

Arsenal are competing for the league title, while Chelsea are in 12th position after a nightmare season, and were dealt a setback in their Champions League hopes last night.

The way Courtois conceded the winner had some Chelsea supporters ruing the lack of Petr Cech, and their comments won't fail to make Arsenal fans smile.

Here is a look at the reaction and subsequent comparisons...

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