5) Jadon Sancho – £73m (Borussia Dortmund to Manchester Utd, 2021)
Things haven’t exactly gone to plan since the winger made the switch to Old Trafford two years ago.
There have been questions about his fitness and attitude, with manager Erik ten Hag having assigned him to an individual training regimen for a couple of months last season.
However, Sancho did return to the first-team fold and the England international did finish the campaign pretty strongly.
There are reports suggesting that he could be sold if United receive a fee in the region of £45m this summer, but there are no bids on the table as of yet.