There is no basis in the wording of the FIFA Regulations for a distinction between a player unlawfully walking out under a contract and another player who breaches his contract through other serious misconduct, like the player’s taking cocaine or committing a serious on or off the pitch offence which goes to the roots of his contract with his employer. The Player’s admitted use of cocaine constitutes the “unilateral breach without just cause” provided by the FIFA Regulations and triggers the consequences deriving thereof, no matter whether this breach causes the Club to give notice of termination or whether the Club continues to hold on to and insist upon performance of the contract despite the Player’s breach.