Arsenal took Barcelona to the cleaners over the sale of Thomas Vermaelen, it is claimed.
Sport says Arsenal knew what they were doing when selling Vermaelen to Barcelona in the summer.
The Belgian defender moved to Camp Nou in a £15million deal, but is yet to make a competitive appearance for Barca, having struggled with injuries.
The Spanish paper have declared that he has endured a "dangerous spiral" of injuries and that Arsenal were paid too much for him.
