Barcelona are eyeing Gremio fullback Felipe Mattioni.

Mattioni had a difficult six months at AC Milan last season and has since returned to his parent club, Gremio.

The player's agent, Mino Raiola, has fielded enquiries from Barca, which are in the market for a new defensive signing.

Raiola has already placed former Inter Milan pair Maxwell and Zlatan Ibrahimovic at Barca this summer.