Sunderland have completed the signing of Didier Ndong from Lorient for £13.6million.
The 22-year-old has penned a five-year contract with the Black Cats to become David Moyes’ seventh new arrival of the summer.
Didier Ndong was born in Gabon but started his professional football career as a youngster in Tunisia in 2011.
“I am very proud and happy to sign for Sunderland,” the Gabon international told the club’s official website.
“This is a new adventure for me and to play in the Premier League is a dream come true.
“Maybe the Sunderland fans don’t know me yet, but I promise that they will quickly discover that I will give everything for them and the club. It will be an honour to wear the Sunderland shirt and I will wear it with a true understanding of what it means.
“I am excited to meet everyone at the club, to see the stadium and of course the fans, who I have heard so many good things about. Today is the most beautiful day of my life.”