Relations between the two clubs have worsened over the past few seasons. Athletic Club were highly critical of Barcelona following the revelation La Blaugrana had made payments to the companies of José María Enríquez Negreira, the former vice president of the Technical Committee of Referees at the RFEF. Executives of both clubs have taken potshots at each other in the press and behind closed doors ever since, with the Williams saga fanning the flames of ill will, according to multiple reports.