Brazil are back in action this week for the first time since their Copa America exit at the hands of Paraguay.
Dunga's Brazil returns to action against Costa Rica at the Red Bull Arena in New Jersey on Saturday, seeking to make amends for its disappointing showing at the Copa America.
Defeat on penalties at the hands of Paraguay saw Dunga's side bow out of the South American showpiece at the quarterfinal stage in Chile in June with focus now turning to qualification for the World Cup in three years' time.
Friendlies against Costa Rica and United States over the next week precede Brazil's first qualifier against Chile next month.