Willian has dismissed suggestions that Brazil's hopes of success rest solely on the shoulders of Neymar.
Dunga's side were beaten by Paraguay in the Copa America quarter-finals after Neymar was suspended from the rest of the tournament earlier in the summer, but Willian believes that there is more to the team than the Barcelona forward.
"I don't think that the problem with the Brazil national team is the players," the Chelsea attacker told Goal.com. "It's not just Neymar; there are many high-quality players so I don't know why they are always saying that we depend on Neymar.
"Of course Neymar is a great player - he's a key man for the Selecao right now - but I think we have players of great quality and, if a player sometimes does not perform the same way he does for his club, I think it's natural because with our clubs we are used to playing with our team-mates who are always with us, training day by day and playing every week. In the national team we're together for a few days and we always try to do the best in the same way."
Brazil take on Costa Rica in a friendly on Saturday.