Chelsea transfers: Blues’ 10 WORST sales, including Cech to Arsenal, Mata to Man Utd & duo to Liverpool

Chelsea transfers – Blues’ worst sales of recent times.

1) Petr Cech

Sold to rivals Arsenal this summer, Petr Cech is still one of the best goalkeepers in the world and should prove a huge asset for the Gunners.

2) Juan Mata

Another world class player, Juan Mata was sold to Manchester United for £37.1m in January 2014 and that looks a big mistake after the Spaniard was the Blues’ Player of the Year for two seasons in a row.

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Chelsea transfers