Philippe Coutinho and Paulinho were influencing factors in Arthur's impending move to Barcelona, the Gremio midfielder said.
La Liga leaders Barca this week confirmed they have agreed a purchase option for Arthur, which can be exercised in July and will cost €30 million plus €10m in add-ons.
Such a move has long been touted with the 21-year-old having played a starring role in Gremio's 2017 Copa Libertadores victory.
Arthur would further add to the Brazilian flavour in Barca's impressive ranks, and it was two of his compatriots he sought out to ask about life at Camp Nou.