Poyet signed his first contract in Roanne, before joining Saint Etienne, where he stayed only one year. After leaving Saint-Etienne, he moved to Roanne, and eventually joined Pomey. Showing fair progress, he was contacted by Saint Priest, which was playing at this point in the Championnat de France amateur.
During a French cup match, he was noticed by a scout of AJ Auxerre, who saw a lot of potential in him. Auxerre eventually signed him. However, during his first years at the club, he had only few opportunities tro play with the first team. Indeed Auxerre was then competing in Ligue 1, far above the level at which Poyet was used to play. Moreover, Djibril Cissé, Auxerre's best player at his position, was performing very well. In 2005, he left for Clermont on loan. Returning to Auxerre in 2005–2006, he scored one goal, but was mostly disappointed by the coach's choices as he only seldom played. He joined Dijon in 2007 and was eventually sold to Brest on a three years contract, plus one optional season if the club would reach Ligue 1. Brest was indeed promoted at the end of the 2009-2010. Poyet played two years in Ligue 1 with Brest. At the end of the 2011-2012 season, he joined SM Caen in Ligue 2.