Benfica defender Victor Lindelof's agent Hasan Cetinkaya has said that there are "offers on the table" for the player.
Sources close to Manchester United have told ESPN FC that the club are ready to fast-track attempts to sign Lindelof, 22, having originally planned to move for him next summer.
Cetinkaya told Aftonbladet in Sweden: "Victor doesn't have a deal with any club. Victor still has a contract with Benfica.
"I can't comment on specific clubs. I can only say that there are offers on Benfica's table, which they can assess. And I will have a meeting with Benfica, too.