Manchester United reportedly must shell out a total of £74m for add-ons from transfers secured by the club in recent years.
The total that the club may have to pay in add-ons for players is said to have soared by £30m over the last two transfer windows.
Moreover, the deals for Harry Maguire, Diogo Dalot and Fred - costing a combined £150m - have pushed the overall add-ons bill up to almost £80m.
According to The Times, Ed Woodward disclosed in the club's annual financial report that the current maximum add-ons bill stands at £74.3m.
This figure is considerable in comparison to when United's add-ons bill was £44.6m in June 2017 and £26.3m in June 2015.