Atletico Madrid coach Javier Aguirre insists midfielder Peter Luccin is not for sale.
The Frenchman has rejected a proposal to open new contract negotiations with Atletico and has held talks with Birmingham City this week.
However, Aguirre said: "He is most important for me. A pillar. He imposes himself in midfield, he has experience and quality. Under no circumstances am I thinking about selling him because he is in my plans."