Bayern Munich are considering putting a fine system in place in the wake of Franck Ribery's declaration that he wants to join Real Madrid.
The playmaker is a known target of Real but Bayern have consistently stressed that they will not part company with their prize asset.
Earlier this week, France international Ribery stated his interest in securing a move to the Primera Division giants.
And now Bayern's new director of sport, Christian Nerlinger, has announced that the club could bring in a fine system in order to avoid a repeat of Ribery's declaration.
"The players need to know the borders, so they don't exceed them again," said Nerlinger.
The tougher stance is the brainchild of manager Louis van Gaal, a notoriously tough disciplinarian, added Nerlinger.
"We unconditionally support him in this," he continued.
"We have told Franck clearly that we are building a team around him and a sale is not an issue for debate.
"The topic will soon take care of itself. Franck will stay with Bayern Munich."