The coach told Marca: "He said 'I can't feel my legs'. Marcelo was scared and called the doctor on but the doctor couldn't get on in the confusion. It was a big shock, the image of Neymar being stretchered off to the helicopter, in difficulty, crying.
"Neymar was our benchmark, one of our references, because he is a player who makes a difference in any team. We're in a situation where we've lost something we don't want to miss, especially for the semi-final and final."
Brazil face Germany in their semi-final on Tuesday.