Culio made his Galatasaray debut on 23 January 2011, starting the whole game, in a 1–0 win over Sivasspor. It wasn't until on 19 February 2011 when he scored his first goal for the club, in a 1–0 win over Bucaspor. Since joining the club, Culio quickly adapted at the club, stating that he settled in and got on well with his teammates, supporters (due to his work rate and professional attitude) and the manager. His second goal then came on 18 April 2011, in a 3–2 win over Manisaspor. Despite missing two matches towards the end of the 2010–11 season, he went on to make nineteen appearances and scoring four times for Galatasaray.