United are aware, however, that prising Fabregas from Barcelona remains a difficult challenge and that there is no guarantee that a third bid will prove successful, despite the indications from the Nou Camp of a potential transfer fee. United chief executive Ed Woodward, having made it clear that Wayne Rooney will not be sold this summer, is also keen to deliver a statement of intent in his first season at the helm by securing the services of a player in the Fabregas bracket.