 Despite missing out one game during the 2008–09 season, Matmour finished his first season at Borussia Mönchengladbach, making 35 appearances (34 in the league) and scoring 3 times in all competitions.Ahead of the 2009–10 season, Matmour was linked a move away from the club, with Turkish side Fenerbahçe interested in signing him, but stayed at the club throughout the summer.At the start of the 2009–10 season, Matmour established himself in the first team, where he played in the midfield position.