Not sure was this posted already, have only checked this page.
A break down of his fee for SportsJoe.ie
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The fee for Anthony Martial could rise to £58m (€78.7m) if he goes on to become one of the world's best players.
The French striker secured his deadline day move from Monaco, on Tuesday, and United will pay £22m up front.
The Premier League club will then pay £3.5m over the next four years - adding up to £36m (€48.8m).
However,
according to French broadcaster RMC, an additional €30m of add-ons could make the 19-year-old United's second most expensive signing of all time [Angel Di Maria cost £59.7m].
Monaco could bank another €5m each time Martial finishes the Premier League as top scorer - to a maximum of €15m.
There is another potential €10m if Martial wins the Balon D'or while he is with United.
More realistically - for now - Martial's former club will get €5m extra if the striker wins the Golden Boy. That award is given to the best player in Europe under 21 and decided by a host of top European football journalists.
Previous winners of the award while at United - Wayne Rooney in 2003 and Anderson in 2008.
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£22m sounds much better.
Also with all those addons Monaco must really rate this guy.