Manchester United's chase for the a star of European football could about to be ruined by Chelsea's refusal to let one of their midfielders move to La Liga. According to the Daily Express, Real Madrid's failed pursuit of a number of targets, foremost being Stamford Bridge star Ramires, as a replacement for Sami Khedira has led to them to look towards a player being closely monitored by Old Trafford scouts. William Carvalho has been absolutely sensation this season for Sporting Lisbon, winning numerous player of the month awards and being considered the revelation of the season in Portugal, winning himself a place in Paulo Bento's World Cup squad. Such form makes it no surprise that the likes of Manchester United are looking to sign him this summer, but there will be forced to pay a significant amount of money to do so.