West Ham's McCartney cools Sunderland return talk
"When clubs show an interest in you it is flattering but I have enjoyed my time at West Ham and I have played in every league game for them since February last year.
"But it's really up to the two clubs and what West Ham want to see happen. If they choose to sell me then it's up to both clubs to agree a fee and we'll see if that happens but I have no desire to move.
"I haven't really given the thought of going back to Sunderland much consideration because I am still a West Ham player.
"I had a lot of good times there but it was time for me to move on and I embarked on a new challenge. In football you never say never but at the minute I can't say that will happen to me."