Marouane Fellaini reportedly sacrificed £4 million in loyalty bonuses from Everton in order to secure his dream move to Manchester United before the close of the transfer window on Monday.
According to the Daily Express, with two years remaining on his contract Fellaini had been due to receive a hefty sum from Everton but, after submitting an official transfer request, forwent the chance to pocket the fee.
Manchester United are reported to have parted with £27.5 million in order to bring the Belgium international to Old Trafford, but the Premier League champions insist the fee paid was far less than that quoted.
It is claimed that Manchester United actually paid the amount of Fellaini's release clause - £23.5 million - which was reported to have expired last month, but Everton were able to declare the deal at £27.5 million having not been required to pay Fellaini his bonuses.
Fellaini will see an increase in salary of over 100 percent after becoming a Manchester United, which will allow him to make up the £4 million he lost by completing the transfer from Goodison Park.
The 25-year-old was only the second signing by Manchester United in an enduringly frustrating transfer window, which saw the club unable to capture several key targets identified by manager David Moyes.