 Konko played 13 matches in Serie A for the rossoblu, before again leaving the club.At the end of the season, he moved to Lazio, for €4 million, signing a five-year contract and was a replacement for Stephan Lichtsteiner, who joined Konko's former club, Juventus.On the opening game of the season, on 9 September 2011, Konko made his debut in a 2–2 draw against A.C. Milan.