The Brazil international has been linked with a summer move to the Emirates after impressing for his country during their Copa America triumph.
Radio Grenal reports that Arsenal have advanced in negotiations for the 23-year-old and a club representative will be in Brazil later this week to conduct a medical with the player ahead of a move to north London.
The outlet believes that the medical examination shows a deal is close to being finalised.
Gremio have denied receiving any formal bids for Everton, although the player himself recently admitted: “At this moment I have an offer, but I can’t say the name of the club.”
The Brazilian side are said to be holding out for a fee of €80 million for the winger, who has a contract until 2022.
Arsenal welcomed former player Edu back to the Emirates Stadium as the club's new technical director last week.
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