Borussia Dortmund have urged Erling Haaland to follow Robert Lewandowski's example amid growing transfer interest from Man Utd.
The 20-year-old striker is wanted by United, who have made the Norwegian their prime target after cooling interest in his teammate Jadon Sancho.
Real Madrid, Man City, Chelsea and Juventus are also among the clubs hoping to prise Haaland from Dortmund in the summer.
But Dortmund CEO Hans-Joachim Watzke believes it is too early for the youngster to be seeking a move elsewhere.
Asked about the prospect of Haaland moving on in the summer, Watzke told Kicker : "I don't think that will happen. Erling and his advisor Mino Raiola know what they have in us.
"I can only advise him to do things like Robert Lewandowski."
Polish striker Lewandowski spent four years honing his craft at Dortmund before eventually moving on to Bayern Munich in 2014; since becoming one of the world's leading marksmen.
Meanwhile, Haaland has only been with Dortmund for a year following his switch from RB Salzburg last January, and Watzke believes he still has a lot to learn.
Get the latest Man Utd news straight into your inbox!
Manchester United are looking to plot their path back to the top.
And you can keep track of their journey by signing up for the brilliant new Mirror Football newsletter!
From the latest news to the agenda-setting stories, get it all in your email inbox.
Signing up is simple. Put your email at the top of this article or follow the instructions on this link.
"Haaland gave himself the time to mature into an absolute world-class player in Dortmund," he added. "You won't be able to do that in a year.
"Because it is clear that if Erling should leave us at some point, then he will only go to an even bigger club, and so many are not considered.
"If you join a club like – just for an example – Real Madrid, you have to be world-class."
Where should Haaland's next move take him? Have your say below.
Haaland does have a release clause in his contract but that doesn't come into effect until 2022, making a transfer this summer more expensive for any potential suitors.
His agent Raiola has close links with Juventus, but Haaland played down reports he could be on his way to Serie A in the near future.
"Have I been close to Juventus? That's what they say, but I've never said it," Haaland told Tuttosport .
"I've been at Borussia Dortmund for a year here, I'm fine here and I'm happy."
Source: Read Full Article