The 21-year-old has long been linked with a move to Premier League side Chelsea.
He told Atletico’s official website: “I am aware that there are always rumours about my future, but actually I am isolated from everything.
“I have always made clear my commitment to Atletico and everybody knows it. Do not pay much attention to what comes out. All I am doing is playing and worrying about the team, so these things do not affect me.”