Translate the following English sentence to French:
"It must be possible to insert provisions such as a clause requiring young players to sign their first professional contract with the club where they have received youth training, perhaps with compensation proportionate to the cost of their training to indemnify the latter club if such a player is transferred."
Des clauses telles que l'obligation du premier contrat professionnel avec le club fondateur, éventuellement compensées par une indemnisation proportionnelle au coût de la formation, doivent pouvoir être mises en place.