Luiz Gustavo has become the sixth Brazil player to be forced to drop out of the Copa America Centenario with the VfL Wolfsburg man sidelined for personal reasons.

After Kaka pulled out through injury earlier in the day, the Brazil Football Federation (CBF) announced on Thursday that Gustavo would be replaced by Gremio Foot-Ball Porto Alegrense's Walace in the squad.

FC Bayern München's Douglas Costa had to withdraw due to a thigh strain.

Dunga's men kick off their group-stage campaign against Ecuador on 4 June before facing minnows Haiti and then Peru.