The young Brazilian has attracted enquiries from Barca and Manchester City.
"I'm a Roma player, I have a contract and I'm very happy to be here," the 18-year-old told Sky Sport Italia.
"I made the choice to come here together with my family and my agent, and I am happy with the decision. I have another four years on my contract.
"I was badly misinterpreted by comments [earlier this week]. I only wanted to say that I am thinking just of training and playing because everything else is taken care of by my agent and the club."