Gremio midfielder Arthur was pictured wearing a Barcelona shirt after reportedly holding talks over a move to the Spanish club.
The 21-year-old is considered as one of the brightest young prospects in Brazilian football and has been also been linked with Manchester United.
But Barcelona are claimed to be leading the race for the midfielder and are keen to quickly conclude a deal before their rivals swoop in.
According to Globo Esporte, Arthur’s agent Jorge Machado held talks with Barcelona’s representatives in Porto Alegre on Friday.
And it was during that meeting where Arthur received a Barcelona shirt to wear. Standing to the midfielder’s right in the picture is Barca’s Brazil-based scout André Curry.
Barca, however, are set to pay a high price for the Brazilian.
His current contract with Gremio expires in 2021, while he has a €50 million (£44.1m) buyout clause in his deal.
Gremio have also insisted that they will not conclude a deal until the end of their Club World Cup campaign later this month.