Barcelona. Raiola gave Guardiola both barrels calling the Nou Camp legend a “cowardly dog” and saying: “As a manager Guardiola is great, but as a human he's a zero!” In a recent interview he even reignited his feud with Sir Alex Ferguson who wouldn't bow to Raiola's contract demands over Pogba back in 2012 and let the midfielder leave to join Juventus.