Sunderland have confirmed they have accepted a bid from Watford for centre-back Younes Kaboul.
The 30-year-old defender is set to join the Hornets on a three-year deal for a fee in the region of £4million.
Kaboul, signed from Tottenham Hotspur last summer, said the club has shown him "fantastic" support with the defender saying he wants to leave Wearside for personal reasons and return to London.
A club statement read: "Younes had spoken with David Moyes in recent days, expressing his desire to leave the club for personal reasons.
"The club therefore agreed to a request from the player’s representative to be allowed to speak to Watford regarding a move.
"An agreement has been reached between the two clubs and the player has been given permission to talk to Watford regarding personal terms."
Speaking about the situation, Younes Kaboul said: “This is not an easy situation for me, but the club and the manager have shown an understanding of my personal circumstances and I am grateful for that.
“The Sunderland fans have supported me fantastically well since I came to the club, they gave me my passion back and I sincerely thank them for that.
"I hope they understand that I have made this incredibly difficult decision for me."