Atletico Madrid chief Miguel Angel Gil Marin has put up a £20 million price tag on youngster Pablo Ibanez.
The talented defender has been linked with moves to Chelsea and Real Madrid.
Gil Marin said: “Pablo will not leave for less than his £20 million clause.
“He has three years left on his contract and is going to fulfill them. We are not going to negotiate his exit because Aguirre wants him.
“And if he is not in agreement with us, he will leave only through a court or by a club paying his clause.”