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Sunderland have signed midfielder Wahbi Khazri for an undisclosed fee from French side Bordeaux.

The Tunisia international, 24, joins on a four-and-a-half-year contract.

Sunderland manager Sam Allardyce said: "Wahbi is a dynamic attacking player [with] the ability to score goals. I am delighted to welcome him to the club."

Khazri becomes the Black Cats' fifth signing of the January window, after Lamine Kone, Steve Harper, Dame N'Doye and Jan Kirchhoff.

He had previously been linked with Everton and Aston Villa.

Sunderland are 19th in the Premier League, four points behind adrift of safety.

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