In January 2009, Radović signed a new contract with the club until the summer of 2012. He subsequently became one of Legia's key players, being the team's top scorer in the 2010–11 season. In June 2011, Radović extended his contract with Legia on a three-year deal. He scored both of his team's goals in a 2–2 home draw with Spartak Moscow in the first leg of the UEFA Europa League play-off round on 18 August 2011. In Group C's second round, Radović scored an 89th-minute winning goal in a 3–2 home win over Hapoel Tel Aviv. He also scored three goals in two games against Rapid București, as the club reached the competition's round of 32.