Haroun scored his first goal of the season, in a 2–1 loss against Genk in the opening game of the season. Since the start of the 2010–11 season, he continued to regain his first team place, playing in the midfield position. It wasn't until on 18 September 2010 when Haroun scored his second goal of the season, in a 1–0 win against K.A.S. Eupen. A weeks later on 26 September 2010, he scored his third goal of the season, in a 2–1 win against Club Brugge. Haroun added two more goals by the end of the year. He appeared in every matches since the start of the season until he missed one match in late–January. Haroun then scored his sixth goal of the season, in a 2–2 draw against Lierse on 12 February 2011. At the end of the 2010–11 season, he went on to make thirty–six appearances and scoring six times in all competitions. It was announced that Haroun would be leaving the club when the season has been concluded.