The purpose of the analysis of this recent CAS award is to show that an international federation such as FIFA must abide by its rules and is not allowed to either rewrite them or to complete them. The FIFA solidarity mechanism does not prohibit parties to provide in their contract that the agreed transfer compensation is net of any deductions, including the solidarity contribution. As such a prohibition is not provided for or even contemplated in the FIFA Regulations, the FIFA DRC cannot disregard the parties’ understanding. Accordingly, when a net transfer compensation has been agreed upon, it corresponds in fact to 95% of the gross transfer compensation, which is the amount on the basis of which the solidarity contribution shall be calculated. Such an amount of solidarity will include the share to which the transferring club is entitled for the period of time during which it trained and educated the player.