Translate the following English sentence to French:
"In that case, we must apply the rules of competition and compound the present follies with a dose of deregulation, accepting, in the name of freedom of movement, the sale and purchase of youngsters aged between 18 and 20."
Dans ce cas, il faut lui appliquer les règles de la concurrence, ajouter de la déréglementation aux folies actuelles, accepter, au nom de la libre circulation, de vendre, d'acheter des jeunes à 18-20 ans.