David Moyes has made his first signing of the transfer window by offering Joleon Lescott a short-term deal.
The former England defender has put pen to paper on a deal with the Black Cats until the end of the season.
He will wear the shirt number 15.
Moyes knows Lescott well, having signed him while at Everton for £5million, later selling him for £22million to Manchester City.
Lescott has been without a club since leaving AEK Athens in November. He only played four games for the Greek side before picking up a knee injury.