Manchester United could lose millions prior to what is expected to be a busy transfer window.
The Red Devils are eyeing a number of players this summer, with Jack Grealish and Jadon Sancho at the top of their wishlist.
However, their transfer budget is set to take a dent thanks to star signing Bruno Fernandes.
Fernandes has made 18 appearances for United since joining in January and the club will need to pay £4.5m once he reaches 20.
Another £4.5m will also be owed if United secure Champions League football.