Lille have announced on their official website they have signed Saint-Etienne winger Dimitri Payet.
The figure involved in the transfer has not been revealed by either club, but reports in France suggest it to be in the region of €10 million [£9.1m].
The France international has penned a four-year contract which will keep him with the Ligue 1 champions until 2015.
Payet, who was also linked with a move to Liverpool, reportedly turned down on Monday a lucrative offer from Paris Saint-Germain to sign for Lille, and the winger has now explained his move.
"This was basically a choice based on sporting aspects. The directors and the coach convinced me with their speech," the player told Lille's website.
"I was seduced by the club's project. A new stadium within a year, a competitive team: here, there is everything to succeed.
"At Lille, I have the possibility of playing in the Champions League and fighting for one of the top places in Ligue 1."