"FC Barcelona and the Brazilian club Gremio de Porto Alegre have reached an agreement on a purchase option for the player Arthur Henrique Ramos de Oliveira Melo, whereas FC Barcelona may exercise this right on the player's federative rights during July of 2018," the La Liga club said in a statement.
"In the event that the Club finally exercises the option signed, the price of the transfer is set at 30m plus 9m in variable amounts."
The 21-year-old is known for his passing ability. Another of his qualities is his ability to lose his man, a factor that makes him a danger close to the opponents' area.
Arthur started his career in 2008 in the youth teams at the Goiás Esporte Clube before moving on to Porto Alegre club Gremio in 2010. He made his way to the first team under coach Luiz Felipe Scolari.
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