The Brazilian football federation said striker Neymar will not play in Brazil's friendly against Denmark this month because his club has a decisive Copa Libertadores match a few days earlier.
Santos goalkeeper Rafael and playmaker Paulo Henrique Ganso are also released from the May 26 match Brazil will play in Germany.
Santos will play Velez Sarsfield of Argentina in the second leg of the Copa Libertadores quarterfinals on May 24, and players have to report to the Brazilian squad a day before the match in Latin America's most important club competition.
The Santos players will join the Brazilian squad for friendlies against the United States on May 30, Mexico on June 3 and Argentina on June 9. The matches will be played in the United States.