Many Premier League supporters are unfamiliar with the 19-year-old, and are certainly skeptic over their club opting to sign a player with promise rather than with established experience.
And, while plenty of eyebrows have been raised over the £36m fee, the deal could cost the Red Devils a total of £58m if the other clauses written into the agreement with Monaco are met.
The Sun [via the Daily Star] have revealed that there are three bonuses, all worth £7.2m, that could be triggered in the next few seasons.
One is that United will pay the said figure if Martial scores 25 goals or more in the next four seasons.
Next, the same amount would be paid if he reaches over 25 appearances for the senior France team in the next four years.
And finally, should he win the Ballon d’Or by June 2019, they would have to pay further.
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