Maurice began his career playing for his amateur local club US Alfortville. After spending seven years at the club, he moved up divisions joining UJA Alfortville. While playing here, he was noticed by Paris Saint-Germain and joined the club in 2007. He started out with the reserves appearing in 33 matches and scoring 3 goals. Maurice did appear on the bench with the first team, during the season, for a Coupe de France match against SC Bastia, but did not make an appearance. On 19 June 2008, he signed his first professional contract agreeing to a one-year deal. He was officially promoted to the senior team and was assigned the number 21 shirt.
For the 2008–09 season, Maurice made no league appearances, but did make his professional debut in the club's first leg 0–0 draw against Ukrainian club Dynamo Kyiv in the UEFA Cup, coming on as a substitute in the 75th minute. That was his only appearance of the season. On 11 May 2009, he signed a three-year contract extension with the Parisian club until the year 2012.