Manchester United boss Jose Mourinho dismissed questions about Benfica defender Victor Lindelof ahead of the summer transfer window.
The Sweden international has been heavily linked with a move to Old Trafford with recent reports claiming that the player will sign a four-year contract.
But Mourinho says it would be disrespectful to make comments on a player who belongs to another team.
"I will not say if I want him or not, I think it's incorrect," Mourinho told reporters.
"Rui [Vitoria, Benfica manager] is not going to be happy with another club manager talking about a player who is his, the president would not be happy to see that.
"Lindelof is theirs and as long as he's theirs, he's theirs."