On Monday, the 34-year-old underwent an MRI scan for the calf injury he sustained last month.
"The examination showed good progress in his rehabilitation, in line with expectations," the Brazilian Football Confederation said in a statement, according to ESPN.
Brazil faces Morocco in the World Cup opener on June 14 local time in Sweden.
Neymar is Brazil's all-time leading goalscorer and has been playing for Santos in his homeland since last year. He has previously played for big clubs such as Barcelona and Paris Saint-Germain. However, he has not been selected for the national team in three years due to knee problems.
