Brazil call up uncapped duo
Costa, of Shakhtar Donetsk, and Coutinho, of Inter Milan, will be assessed in the training camp for Europe-based players which will take place from 2-8 September.
Brazil have opted not to play a match during the period when many other national teams have friendlies scheduled.
Only five members of Dunga's 2010 FIFA World Cup™ squad have been selected, with invitations going out to Tottenham goalkeeper Heurelho Gomes, defenders Thiago Silva and Dani Alves of AC Milan and Barcelona respectively, Chelsea's new midfield recruit Ramires and Manchester City forward Robinho.
Manchester United defender Rafael keeps his place after being called up for the recent friendly against the United States.
Brazil training squad: Heurelho Gomes (Tottenham), Diego Alves (Almeria), Dani Alves (Barcelona), Rafael (Manchester United), Andre Santos (Fenerbahce), Marcelo (Real Madrid), Alex (Chelsea), David Luiz (Benfica), Henrique (Racing Santander), Thiago Silva (Milan), Hernanes (Lazio), Ramires (Chelsea), Sandro (Tottenham), Lucas (Liverpool), Carlos Eduardo (Hoffenheim), Douglas Costa (Shakhtar Donetsk), Fernandinho (Shakhtar Donetsk), Philippe Coutinho (Inter Milan), Alexandre Pato (Milan), Robinho (Manchester City), Andre (Dynamo Kiev), Hulk (Porto).