Prior to his work in football, Leproux worked for the music recording label PolyGram before moving on to the French television service M6, where he was later named vice-chairman.^{[citation needed]} While at M6, Leproux was the director of football club Bordeaux.^{[citation needed]} In 2001, Leproux was installed as president of RTL, the popular nationwide commercial radio network owned by the RTL Group.^{[citation needed]} In 2006, he was recruited to head the French site of Axel Springer AG and was tasked with creating an English version of the German magazine Bild.^{[citation needed]} In September 2009, Leproux was named president of football club Paris Saint-Germain. In his first year of presidency, the club won the Coupe de France. It was during Leproux's presidency that the "Plan Leproux" was instituted, banning 13,000 Paris Saint-Germain supporters in an effort to pacify the Parc des Princes.^{[citation needed]}