Sarri has openly stated that he wanted to speak to them face-to-face before any decision was made about their futures and that will finally be possible when they return to Cobham.
In a post on Instagram, the Brazi global published a picture of the letter, in which a man claiming to be a FIFA-registered agent called Denirobson Dias grants permission to another man by the name of Renee Pinheiro Anunciacao to act on behalf of the winger.
Sarri's arrival at Chelsea was immediately followed by the signing of former Napoli midfield lieutenant Jorginho, who followed his old boss to west London in a deal worth £57million.
His first season wouldn't quite go to plan though, scoring just seven League goals for Chelsea as Jose Mourinho's side struggled to defend their Premier League title.
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"I am not happy about the situation but before answering I would like to talk to him".
"I don't know in the future, it depends on the club, and especially on him I think".
"The way he plays I think will be flawless for English football".
He said: "I am looking forward to playing in Wembley, it is my first time".
'Maybe the starting XI will be very, very near to the last match. "He will stay with us for all the season", he said. The last three days for him were very intense, so maybe this match he was a bit exhausted.