I have checked Transfermarkt for further information about Neymar's current condition. It says that his return date is still unknown. Even though people are staying positive about his return soon I'm not that much sure for now. Missing the rest of the group matches will be bad for him of course. But hopefully he can catch up with the matches in the later stages.
As for the team they can find a solution to this actually. Because Brazil's most effective line is attacking obviously. There are so many talented wingers in the squad already. For example, Antony can fill his place as a player who can play on both wings.
Based on medical sources an ankle injury with swelling can take up to two to twelve weeks to heal. Neymar is very important player in the Brazil national team and they would want to do everything possible to ensure he comes back quickly. We have hard issues when some player would be given pain killers just to ensure that they come back to the team. But I think Neymar should ensure he takes his time and recover from the injury because quick remedy might lead to permanent injury. Afterall Brazil has some good players that can replace him and Neymar still have the opportunity to feature in the next world cup.
Anyone that says that Brazil doesn't need Neymar or Brazil plays better than Neymar does not know football. They don't know the role of Neymar in any team. All those openings Brazilians see and run during the match are all created by Neymar.
Neymar is the only Brazilian player that has the ability to move the ball from the midfield to the attack. When Neymar moves with football, he moves with 3 to 4 opponents, this creates chances for other players to exploit.
The Brazilian National team coaches and personnels worship him as a King. They know why.
If you think that Neymar is not important to Brazil what Germany did to Brizil will repeat itself.
I am very surprise people are saying that Brazilians hate Neymar and they were happy when he was injured. This comments are not completely the truth. Neymar is a player that can pull surprise anytime. A player that is very skillful, score goals and is not scared to confront any defender is an asset to any team. He is one of the best and every coach would like to have him in his team.