Director of Football?

There are concerns that United have problems in attaining players, or more specifically the right kinds of players in a timely manner.
Toby Alderweirled of Tottenham was linked heavily to the club, but he has stayed at Spurs for now. The club's Executive VP, Mr. Ed Woodward, is tasked with handling transfers. The club has also been charged with missing important targets.
Could a director of football help things? Possibly.
Arsenal has recently appointed Raul Sanhelli as head of football operations. To all intents and purposes, he is the club's director of football and performed this adeptly at Barcelona.
Should United follow suit? It would clarify expectations between the board and manager, and ensure that a football specialist can conduct transfers and pursue targets.
Mourinho himself has said that he's a head coach essentially, and not a manager who controls all footballing operations. Attaining a director of football can surely clarify roles, duties, and outcomes.