SUNDERLAND have completed their first signing of the January transfer window with Alfred N'Diaye joining from Bursaspor.

The 22-year old Frenchman arrives on Wearside after putting pen to paper on a three-and-a-half year deal at the Stadium of Light.

N'Diaye, a France Under-21 international, began his career at French Ligue One side Nancy before moving to Turkey in 2011.

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He will wear the number four shirt for Sunderland.