United have been forced to agree to pay a premium wage to the 26-year-old Argentine because they could not offer him Champions League football.
Di Maria's advisers have been touting the winger around Europe all summer - and United blinked first by agreeing a fee of £59.7million with another potential £7million in add-ons.
Sunday Mirror Sport can also reveal that the proposal to clubs like Paris Saint-Germain and Manchester City was that they would pay him a basic salary of just under £6.5m - AFTER TAX.
For clubs unable to offer him the chance to play in Europe's top competition, that net figure went close to £7m.
When income tax and national insurance are factored in, Di Maria will cost United £70m in basic wages over the course of his five-year contract.
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