Watford have completed the signing of defender Younes Kaboul from Sunderland.
The 30-year-old centre-back has signed a three-year contract after the Frenchman asked to leave the Wearside club after just one year, due to personal reasons.
"I'm very happy and delighted to be a part of Watford Football Club, and I'm looking forward to the season," he told Watford's official website.
Kaboul played an integral role in helping the Black Cats avoid relegation, following last year's summer move from fellow Premier League club Tottenham.
Watford are believed to have paid around £3.