Sevilla president Jose Maria del Nido refuses to discuss the future of Geoffrey Kondogbia.
The young French midfielder is a top target for Real Madrid and Manchester City.
"I love it when they talk about my players, but we aren't going to say a word about transfers until the end of the season because we still have a chance of qualifying for Europe," said del Nido.
"If an offer in excess of 6m comes in for him, Sevilla would have to pay 50% of that offer or sell him."