Player Thiago Silva (38) was asked during a news conference if Neymar would play and Tite took hold of the microphone and said "yes".
Neymar suffered the injury in Brazil's opening 2-0 win over Serbia, which ruled him out of their 1-0 win over Switzerland and the shock defeat by Cameroon, one of a series of injury problems within the squad.
"Neymar will train today in the afternoon and if he trains well he will play," Tite told a news conference.
Neymar has suffered many issues with his right foot and underwent surgery four years ago for a fractured metatarsal.
It will be warmly welcomed in a squad beset by fitness woes with Danilo also hurting his ankle against Serbia and Alex Sandro (31) suffering a hip injury against the Swiss.
Alex Telles and forward Gabriel Jesus, who sustained a knee injury against Cameroon, were ruled out for the rest of the tournament on Saturday.
Tite said Danilo (31) was also fit to return against South Korea on Monday but Sandro was out,
"He can't play. Still recovering. Danilo and Neymar are back," he said.
Tite stressed that Neymar's return was with the full backing of the team's medical staff and the player's physical health was the priority.
"If he plays, it's because he is in full health and ready to start, to play from the beginning and the entire game with no limitations," Tite said.
"My preference is always to play my best players from the start."
Neymar had faced a race against time to be fit after suffering an ankle injury earlier in the tournament against Serbia.
Brazil will be without Gabriel Jesus (25) in their forward line after he was ruled out of the World Cup through injury.
