 Guidetti made his debut in the game against NAC Breda on 11 September 2011 in which he scored a penalty.He also scored a penalty in the match against De Graafschap and 2 more from the penalty spot against VVV-Venlo.He scored his first goal from open play for Feyenoord against Vitesse in the 4–0 away win, netting two goals in the game.