The Sao Paulo midfielder has already agreed to join the club in January but admits it is difficult not to think ahead.
He said: “It is clear that I am focused to help my club São Paulo in the Brasileirão and Copa Sudamericana.
“But I do regularly think the challenges that lie ahead. I imagine the fact I will have lack of friends and my family.”
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Summer 2016 is set to be a very exciting time for football fans, as this is when the long awaited Euro 2016 tournament kicks off.
Since Guus Hiddink arrived at the helm, Chelsea have improved considerably after a tricky start to the campaign.