The 19-year-old attacking midfielder has passed a medical, agreed personal terms and will complete his move on July 1.
Nathan has played for Brazil at under-20 level. He also scored five goals in five games at the under-17 World Cup in 2013 before being named in the team of the tournament.
"I am very happy to be joining Chelsea, the champions of England, and I hope I will be able to learn a lot and develop my game," he told the club website (
Nathan joins fellow countrymen Oscar, Willian, Ramires and Filipe Luis in the squad.

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