FC Barcelona confirmed the news on twitter as well as on their website.
The tweet read:
The official statement from FC Barcelona read: "FC Barcelona have signed 22 year old French international defender Samuel Umtiti from Olympique Lyonnais for the next five seasons.
FC Barcelona have paid 25 million Euros for the player.
Umtiti's buy out clause is 60 million euros.
Samuel Umtiti will arrive in Barcelona on Thursday afternoon local time with a photo session planned outside the Club offices at a time yet to be decided.
On Friday 15 July, in the morning the player will undergo a medical before signing his contract.
The official presentation of the player follow the timetable below.
At 1.30pm CET, official presentation at Camp Nou
At 2.00pm, photo session on the field at Camp Nou. The public can access the stadium from 1.45pm.
At 2.30pm, press conference in the Ricard Maxenchs press room. The player will be accompanied by sporting vice president Jordi Mestre, the director of professional sports Albert Soler and the technical secretary Robert Fernández."
Samuel Umtiti had an impressive season with Ligue 1 giants last time as played 30 matches for the side. His good run run of form earned him a call-up in the French national side for the Euro 2016.
He played 3 matches at the Euro 2016 including the final against Portugal.