The Red Devils are currently in talks with the Portuguese side over their star midfielder, and Van Gaal is keen to see him partner Ander Herrera in a new-look team next season.

The 22-year-old has established himself as one of the finest holding midfielders in his country, and Jose Mourinho is also believed to be interested despite already signing Cesc Fabregas from Barcelona.

The Blues have reportedly offered Sporting £11million plus a player on loan, but United are in the driving seat after negotiating deals for Cristiano Ronaldo and Nani in the past.

However they will have to splash the cash if they want to land the Portugal international after Sporting revealed that Carvalho will only leave if his clause is met.