The goalkeeper became United's highest-paid player two years ago after two years of talks between the shot-stopper's camp and the club.
But the deal, which guaranteed De Gea £75million in salary, still does not sit well with those in power at Old Trafford.
The report claims that the bumper contract, which tied him down to the club until at least the summer of 2023, led to challenges.
The lucrative deal reportedly resulted in inequality in salaries at a time when United's hierarchy were looking to control the books while De Gea also suffered a loss in form.
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