Daley Sinkgraven
Sinkgraven has been very impressive for SC Heerenveen this seasonYouTube screenshot from SC Heerenveen's official channel

Manchester United are reportedly looking to step up their interest in teenage midfielder Daley Sinkgraven following speculation of Real Madrid, Barcelona and Liverpool also looking at the possibility of signing the young Dutchman.

The 19-year-old midfielder has caught the eye of Manchester United boss Louis van Gaal with his impressive performances for Eredivisie side SC Heerenveen.

However, the former Barcelona boss is reportedly worried that Manchester United will lose out on the youngster's signature as many other clubs including Real Madrid, Barcelona and Liverpool are also rumoured to be interested in the Dutchman.

Due to this reason, van Gaal is reportedly looking to complete the deal as quickly as possible before another club comes up with a formal bid.

According to the Daily Mirror, the Dutchman, who is looking to make an offer for Sinkgraven in January, has already asked his scouts to give him a detailed report of the youngster's performances.

It is believed that Sinkgraven will sent back to Heerenveen on loan till the end of the season if a deal does materialise.

The 19-year-old may turn out to be a big player under van Gaal as the Dutchman's has the knack of discovering young talent and transforming them into stars.

Meanwhile, Angel Di Maria has rubbished claims of him joining Manchester United for money, insisting that he joined the Red Devils to wear the number 7 shirt.

Real Madrid boss Carlo Ancelotti recently concurred with president Florentino Perez's earlier claims that the Argentine left the Bernabeu after his wage demands were not met by the club.

However, the 26-year-old winger, who has been in pretty good form for United this season, insists that he moved to Old Trafford to wear the legendary number 7 shirt, worn by some of the greatest players in the club's history.

"I have these amazing feelings about having moved to Man United," Di Maria told The Daily Mirror. "I'm so proud of myself, you know. It's hard to explain it and put it in words. I wanted to wear this shirt.

"And it is so nice for me to wear the number seven shirt. It was worn by some of the greatest players in the club's history and I do know that it is a huge thing for all Man United fans.

"I think people here are happy with me. So I must honour this shirt. I must confess that I had all these expectations - but Man United have exceeded my expectations. It has all been perfect for me so far."