Manchester United are scouting Mjallby midfielder Otto Rosengren.
Mjallby sporting director Hans Larsson has confirmed United are watching the 19 year-old.
Larsson told Fotbollskanalen: "I think it's been several times actually, at least based on what they told me, but I haven't met anyone. They have only contacted and said that they will come, because they want tickets.
"It's great fun, absolutely. It's proof that Mjllby is working right, and he's our own product, so it's great fun. Then there is his first year as a regular in the Allsvenskan.
"It's up to both him and us if we're going to let him go, but it's nothing concrete. As usual, you have to lie low until there is something concrete. We don't have anything, just that they're looking at him, and it's exciting."
Rosengren won a first cap with Sweden U21 earlier this season.