Having retained the Elite One championship with Coton Sport, he was transferred to Monaco in July 2011 for an undisclosed fee. He signed a three-year contract with the club, who had been relegated to Ligue 2 at the end of the 2010–11 season. Salli made his debut for Monaco in a 0–0 draw with Boulogne on 1 August, and scored his first goal for the club three weeks later in a one-all draw with Amiens. Salli scored his fifth goal of the season in league and cup competition on 2 March 2012 in a 2–2 draw with Sedan. He finished the season with five goals in 31 appearances. Salli played regularly for the reserves in the Championnat de France amateur the following season and made one appearance for the first team as the club won promotion back to Ligue 1 as champions.
