Manchester United will be due a massive windfall courtesy of a huge sell-on percentage in their deal with Crystal Palace and Wilfried Zaha.
The Daily Express reports Zaha joined United on a five-and-a-half year contract back in January 2013, a move which cost the club an initial £10million.
United loaned him back to his boyhood club Crystal Palace before he moved up to Manchester in the summer.
The young winger struggled to break through under David Moyes and only made four appearances for United before going on loan to Cardiff and Palace once again.
In February 2015, Palace agreed a deal to sign Zaha permanently for an initial fee of £3m, with add-ons taking it to £6m.
It is that deal which could provide a return on their investment six years later, with Zaha once again angling for a move away from Selhurst Park.
Zaha is now ready to leave Palace and could attract attention from the likes of Everton, Arsenal and Tottenham, who have all shown interest previously.
If any of those clubs do sign Zaha, then United will be owed 25 per cent of the transfer fee that Palace receive.
