 At age 15, his math teacher at the time recommended that he try out for Mouscron's academy, "Futurosport", which was a short distance away across the Belgian border.Ouali took his advice and was admitted into the club shortly after.Ouali progressed through the junior ranks of Mouscron, and on 27 January 2007, he made his professional debut for the club in a league game against KAA Gent.