BARCELONA, SPAIN - AUGUST 10: Thomas Vermaelen poses as he is unveiled as a new player for FC Barcelona at the Camp Nou stadium on August 10, 2014 in Barcelona, Spain. (Photo by David Ramos/Getty Images)

5 Arsenal players named in 15 worst Barcelona signings of all time

Five former Arsenal players have been included in Barcelona’s 15 worst signings of all time.

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