The Brazilian completed his move to the Rs yesterday.
"London is a big attraction," he told the Daily Mail. "It is one of the two or three best cities to live in the whole world. It reminds me of New York. It's perfect for my future too. I can speak a bit of English now but coming here gives me the opportunity to learn it really well. I'm a little bit shy speaking English at the moment.
"I don't trust myself so I'll start studying next week and hopefully in six months to a year I will speak really, really well. I'm very, very happy. It's a new experience for me and my family. The opportunity to play in the Premier League, the best football in the world. I can't wait to train, I can't wait to play."