"Nice" confirmed that their new coach is Patrick Vieira, who left "New York City" for the position.
London "Arsenal" legend will replace Lucien Favre, who left for "Borussia" Dortmund.
The duration of the Frenchman's contract with the Ligue 1 club is not announced.
"I was convinced by the project and the people involved," Vieira said. "I had many discussions with Julien Fournier (the club's general manager) and the president (Jean-Pierre Rivere)."
"When I look at the squad, it makes me envious. It has everything needed for success."
"My football player career means nothing more to me, it is a part of the past. The most important thing for me is to know clearly what I want from the players - to have a clear game plan, so they can express themselves, because we have enough talent."
Speaking of talent, Vieira expressed hope that the team will be able to keep their leader Mario Balotelli. Last season, "Nice" finished eighth in the French championship.