The £58m fee paid by Manchester United for Monaco striker Anthony Martial features a raft of clauses.
The Sun says United paid £36m up front for the Monaco star, 19, who has described the fee as "scary". And there are three bonuses that can now be triggered, each worth £7.2m.
United will pay the first of them to Monaco if Martial scores 25 goals in the next four seasons.
The teen striker has yet to play for France but is set to make his debut in a friendly against Portugal tonight.
If he reaches 25 caps over the same four-year period, United will have to stump up another £7.2m.
And to complete what's already a mega fee, United need to pay a further £7.2m should Martial win the Ballon d'Or by June 2019.