Real Madrid have issued a hands-off warning to Manchester United over Raphael Varane.
The France international has been linked with a move to Old Trafford, with United reportedly in the market for a new centre-back.
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"It's not just me [who wants to keep him]," Zidane told the media before his team’s meeting with Villarreal on Saturday. "He is part of this club, we were very lucky to be able to bring him to Madrid.
"He has a great career, he's achieved a lot since he's been here. Of course, he is untransferable for the club, for the coach that I am, for people in general.
"That's clear and unambiguous. Now we can't stop people from talking. They're not just talking about Varane, but about all the players, Real Madrid ones and others.
"But for Varane, my position is clear, and it's the same as the club's position."
Harry Maguire and Victor Lindelof have been Ole Gunnar Solskjaer’s preferred picks in the heart of the defence so far this season.
Solskjaer’s side did keep a clean sheet on Saturday, beating West Brom 1-0 to climb up to ninth in the Premier League table.
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