The Black Stars are in Group H alongside Portugal, South Korea, and Uruguay.
While assessing the strength of each side, Ertugal gave the African representatives no chance of getting a ticket to the knockout stage.
The Turkish tactician also added that Cristiano Ronaldo’s Selecao might progress all the way to the quarter-finals.
“Portugal is an interesting team,” Ertugal said.
“It was always a one-man show, years ago, in which they always had unbelievably great talents and players, but do they have the capacity to reach a certain level? I probably see them in the quarterfinals, but not over, there’s not enough in this team,” he said.
“For me Ghana have got no chance in this group, no chance.
“Uruguay maybe. Korea is interesting. They have, in the last few years, they have always started Kim Min-jae, who played for Fernebache and now plays for Napoli. He is a great, great defender, and they have many of them.
“So Korea could be a surprise in the end there.”