The CBF hasn't filed an appeal against the suspension to four games
The penalty arising from Neymar match between Brazil and Colombia has a history of long-haul. First he was punished with two games; then dropped to 1; and finally have four games that the striker cannot play.
However, the final chapter of the saga was written by the Confederação Brasileira de Futebol, who has decided not to appeal it, after the coaching staff met with the player. This meeting, reports the CBF took place in the concentration Hotel just after the game against the seleção against Venezuela (the last of the group stage of the Copa América, which has given the place for the quarterfinals as leaders).
Thus, the player must comply with all sanctions and dispute any party in this Copa America. That is why Neymar will leave on Monday the concentration of the Brazilian national team and has permission from the coach Dunga to start the holidays.