The 18-year-old is the rawest of the trio, having made his professional debut less than two years ago and was recently plying his trade in Brazil's second division.
But the box-to-box midfielder has taken the big jump to move to England and in his first interview as a Chelsea player outlined why.
"It’s a very big opportunity for me," he told the club's official website.
"This is a big club playing in big competitions like the Premier League so I am very excited. The players here are so good and I am very happy to be here."