 Léonard represented Belgium at Euro 2000, being an international over a 12-year period.Born in Liège, Léonard started his professional career at Standard Liège.There, alongside Régis Genaux and Michaël Goossens, he was part of The Three Musketeers generation – with Roberto Bisconti playing a smaller role – hailed for their sporting talent but with a troublesome character.