Barcelona are working the Brazilian transfer market leading up to the January transfer window.
After the success of Arthur Melo, Barca are watching two more youngsters from Gremio.
The LaLiga champs have Everton and Mateu Henrique on their radar as they seek to strengthen their Brazilian contingent.
Also interesting Barca is Flamengo defender Rodrigo Caio, 26.
The Brazil international only moved to Fla this summer from Sao Paulo.