Brazil boss Luiz Felipe Scolari revealed his unhappiness with the Selecao squad following a training session on Sunday.
The experienced manager reportedly split his 23-man squad into two teams on a number of occasions at the weekend for a series of practice games.
However, following the session, Scolari declared the training "all wrong".
"I did not like the training, I did not like anything, all wrong," Scolari told Globo TV.
"When I do not like something I have to find a solution, put it on the field, until I'm satisfied."
Brazil are the favourites to win the World Cup on home soil this summer.
