The 26-year-old suffered a strained right adductor muscle in Gremio's 4-1 home victory over Paraguay's Guarani in their Copa Libertadores group match on Thursday, reports Xinhua news agency.
He will miss Wednesday's Copa Libertadores duel with Desportes Iquique in Chile and is also expected to be unavailable for the Brazilian Serie A season opener against Botafogo on May 14, Gremio officials said on Friday.
Maicon, Edilson, Gaston Fernandez and Beto da Silva are also receiving treatment for muscle injuries.
Gremio are currently top of the Group H standings with 10 points from four matches, three points ahead of club Guarani.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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