Villarreal vice-president José Manuel Llaneza insists Juan Foyth isn't for sale.
The Argentina defender is wanted by Barcelona.
But Llaneza said: "Villarreal aren't prepared for that, [they will have] to pay the clause with LaLiga, we're not open to negotiating for any player, especially not Juan."
Llaneza denied any talks with Barça: "There has not been the need to do anything. It's similar to Lo Celso, he wants to play for Villarreal, he wants to be here.
"Naturally, if an offer comes from a big club, it has to be studied, but I have spoken with his agents and there's nothing that indicates that will happen."