The Premier League champions have had their fingers burned with Gerard Pique and Paul Pogba in recent years, and are concerned the Belgian's agent could offer him around Europe
Manchester United are ramping up their efforts to keep teenage superstar Adnan Januzaj at the club, with senior Old Trafford officials concerned he could leave the Premier League, The Sweeper can reveal.
The 18-year-old, who joined United from Anderlecht in 2011, hit the headlines on Saturday after bagging a match-changing double on his full debut as United overcame Sunderland at the Stadium of Light.
A source told Goal: "The club have strict parameters about the type of wages they're prepared to offer young players, but there is a growing acceptance they will have to break with convention if they are to prevent Januzaj from leaving."
United have approached Januzaj's parents, who were present for the club's Senior Cup tie with Bolton on Monday, for informal talks over the 18-year-old's future and made clear that he is very highly thought of at Old Trafford.
The club are concerned about potentially losing Januzaj to another European giant, with both Paul Pogba and Gerard Pique having left the club at a young age in recent years.
United are also looking to support the youngster as he decides who to commit his international future to, having been born in Belgium to Kosovar Albanian parents.
De Vriese has admitted that a number of clubs are monitoring his client's situation, with the retirement of Sir Alex Ferguson having stalled negotiations with the club in the summer.
"I’m not going to say which teams are interested in him, but I can tell you that there is interest from several European clubs," he told Voetbal News.
"The departure of Sir Alex Ferguson meant that there was a break in the negotiations. We are back working on the calls and will see how it goes.
"Adnan’s family have given me the permission to communicate. As it is only me involved, there can be no misunderstandings in the media."
- Paul Clennam