4) Manchester United
United have not picked up bargains, but they’ve so far signed players they needed, and look like they’ll continue to do so until the new season. £27m left-back Luke Shaw has the potential to play for the club for much of the next decade, and Ander Herrera provides the midfield with the class and guile it cried out for last summer. If they acquire Arturo Vidal and Mats Hummels, they’ll shoot right to the top of this list.