The 22-year-old, having made five appearances, has admitted that he is "very happy" to be a Sunderland player.
Alfred N'Diaye: "I'm liking being here at Sunderland.
"I love playing at the Stadium of Light and I love meeting the fans.
"I'm very happy here. To play in front of crowds of 40,000 is a great feeling.
"It makes me happy to be able to give them something back and sign autographs or have photographs taken."