Carlos Carvalhal insists Tom Lees is not for sale as speculation continues to link clubs with bids for the Sheffield Wednesday defender.
Bristol City were last week said to have tabled an offer for the centre half, following in the footsteps of Fulham earlier this summer.
But Carvalhal - frustrated by the speculation - says Lees will not be leaving Hillsborough.
“We want Tom Lees, “ Carvalhal told the Star. “To us, he is a very, very important player. I expect everything to be clear in the next few days and he will stay with us.
“But it is not really a question of being clear because our chairman has said that we do not want to sell any of our players.”
Carvalhal says Wednesday have not received any official bid for the 24-year-old, who was one of the Owls’ top performers last season.
And the head coach says speculation can be unsettling for a player.
He said: “I think these kind of things disturb the mind of the player. I don’t know who is putting this in the newspapers but to me it is not good.
“If it is true, the people must talk properly but from what I know, we have received nothing official
“The rumours are bad to the head of the players because after they are not able to concentrate on the work properly.”
Carvalhal refused to be drawn on suggestions the Owls had tabled a bid for former loanee Lewis McGugan.
Reports have suggested the attacking midfielder is poised to return to Hillsborough on a permanent deal from Watford but Carvalhal simply said: “I never talk about the players we don’t have here.”