Athletic Bilbao president Fernando García Macua is fast losing patience with Fernando Llorente's transfer situation.
Macua fears the constant speculation around their star striker is destabilising the club.
Real Madrid are chasing the Spain international and their president Florentino Perez is keen to set up a summer deal for the striker.
Macua confessed: "It is a topic that bothers me a lot because people get carried away by the terrifying pressure and we can become destabilised."