Juventus have opened talks over Gremio pair Felipe Mattioni and Douglas Costa.

After Juve chief scout Renzo Castagnini's scouting mission to South America last month, the Turin giants are accelerating negotiations for both young Brazilians.

Fullback Mattioni counts on Mino Raiola as his Italian agent, who revealed: "At this point, I think I'll define the transfer of the player to Europe within the next few weeks.

"I can only confirm the player is liked by Juve, among many other clubs in Italy."