The 24-year-old has been linked with a move to Real Madrid for the past two summers.
“I feel very happy where I am now. I feel very happy in Manchester,” he told Sky Sports News.
“Manchester are challenging for titles and I have to appreciate that. Maybe the other clubs don’t have an opportunity like us.
“As for the future, only God knows. I prefer to speak about the present and the present is brilliant.
“Manchester play well and I feel very happy here and I want to stay here.”