Sunderland has made its ninth signing since the end of last season with the free transfer of midfielder David Vaughan from Blackpool.

The 28-year-old Wales international left Blackpool following its relegation from the English Premier League.

Vaughan has also played for Crewe and Real Socieded, and Sunderland manager Steve Bruce says ''it's only natural that he caught the attention of a number of top clubs.''

Bruce has also signed Wes Brown, John O'Shea, Ahmed Elmohamady, Craig Gardner, Sebastian Larsson, Keiren Westwood, Connor Wickham and Ji Dong-won.

Sunderland finished 10th last season.