The winger has been linked with the likes of Manchester United and Barcelona in recent months.
“Moving somewhere else is not in my thoughts right now,” the 21-year-old told his club website. “I want to stay here.”
“This has been the first year in which I have had the opportunity to play week in, week out,” he added.
“I am pleased with that, it shows that I have improved a lot. I love it here. I have won titles here and I really love that. I want that success to continue and I want to work here for longer.”
