The details of the agreement between Manchester United and Monaco which saw Anthony Martial join the Premier League side have reportedly been leaked, showing that the deal is worth around €80 million (£60.8m).
Football Leaks released a document which they claimed to be the contract to which the two sides agreed as Louis van Gaal's side purchased the striker in the summer transfer window.
Monaco would not comment on the leak but a source close to the situation told Goal.com that it was an "unsurprising' development".
The document indicates that United paid a total of €50m up front for the 20-year-old, with €20m going to the Ligue 1 side within three days of the agreement being reached, while United must fork up the remainder before July 1, 2016.
The contract goes on to show that Monaco were owed a further €10m when Martial made 25 appearances in which he played at least 45 minutes for his new side.
Further to that, Untied will have to pay another €10m once he reaches 25 goals and the same again if he makes the list of nominees for the Ballon d'Or during his time at Old Trafford.
United would also have to pay Monaco a fee if they sell Martial to another club for over €60m, depending on which of the previous clauses are met.