for the 2009–10 season, tafer's playing time was slightly increased. on 26 september 2009 in his season debut, he scored his first professional goal against toulouse after appearing in the match as a halftime substitute. the goal drew the match at 1–1 and lyon won the match after a late second-half goal from bafétimbi gomis. two months later, he assisted on césar delgado's goal in a 2–0 victory over boulogne. on 13 january 2010, tafer made his first career start in a 3–0 win over metz in the coupe de la ligue playing the entire match.