Culio re–debuted for the club on 17 July 2017, in the opening game of the season, in a 1–1 draw against FC Botoșani. He then scored his first CFR Cluj goal since leaving the club, in a 3–0 win over Gaz Metan Mediaș on 29 July 2017. This was followed by scoring the next two goals in two matches against FC Politehnica Iași and Dinamo București. Since joining the club, he quickly established himself in the starting eleven for the side. By the end of 2017, he scored three more goals for the side. Later in the 2017–18 season, he scored two more goals for the side. He played a vital role for the club, along with Ovidiu Hoban, when they helped the side win the league for the first time in six years. Despite missing out some matches, due to suspension, during the 2017–18 season, Culio finished the 2017–18 season, making thirty–four appearances and scoring eight times in all competitions.