Sunderland have signed Bordeaux midfielder Wahbi Khazri.

The 24-year-old midfielder has put pen to paper on a four-and-a-half-year deal and is Sunderland's fifth signing during the current transfer window.

"Wahbi is a quick, dynamic attacking player," manager Sam Allardyce told the club's official website.

"He has many attributes, not least his delivery from wide areas and set pieces and of course his ability to score goals.

"His versatility will certainly complement our existing forward options and I'm delighted to welcome him to the club."