The club officially confirmed the news on twitter as well as on their official website.
The tweet read:
The official club statement read:
FC Barcelona have reached an agreement with Paris Saint-Germain FC to sign the 22 year old French player Lucas Digne for the next five seasons.
BarÇa have paid an initial 16.5 million euros with another four possible according to individual and team results. Digne's buy out clause is 60 million euros.
After breaking into the first team at Lille, he was signed by PSG in 2013 where stayed until 2015. Digne spent last season on loan at AS Roma, facing BarÇa in the Champions League group stage.
In total he has played 148 matches for Lille, PSG and Roma, scoring six goals and recording 13 assists. His pace on left makes him a threat going forward as does his excellent technical quality on the ball.
Lucas Digne will arrive in Barcelona on Thursday early in the morning local time to undergo a medical and sign his contract.
The official presentation of the player will follow the timetable below.