Middlesbrough manager Gordon Strachan has told defender Emanuel Pogatetz that he will not be leaving in the January transfer window.
The 26-year-old Austria international has attracted interest from Panathinaikos, who reportedly tabled a €1.5million bid for the player on Thursday.
The Greek club are thought to have held contract talks with Pogatetz's agent, but Strachan insists he will not be leaving the Riverside this winter.
"A Greek club has offered us money for him," he told the Northern Echo. "But it's not something we're interested in.
"If we tried to get the same type of player to replace him, or maybe one who is not even as good as him, it would cost us more than five times what the other team (Panathinaikos) are offering. So it's not worth it.
"Poggy is fine about it. He understands our position and that it won't happen.
"He's one of our big men, one of the really big figures at this club, and his leadership is invaluable to us."
Meanwhile, in terms of players coming into the club, Strachan revealed that he is not willing to take gambles on relatively unknown talent.
The new Boro boss says he wants strong characters in the dressing room, as the Teesside outfit look to get their promotion campaign back on track.
"I cannot afford to gamble on players I don't really know," he added.
"There will be no foreigners coming in, that's for sure, because I need to know who's coming. Their attitude and character cannot be in question.
"We need more players in, but they need to be the right ones. We have a group of young players who want to be led, and my job is to find them some leaders."