Neymar will re-join Paris Saint-Germain's squad over the next two days but outgoing head coach Unai Emery does not know when the Brazil star will be ready to play a full part in training.
The world's most expensive player has been sidelined since suffering a broken metatarsal during a 3-0 Ligue 1 win over Marseille at the end of February.
His race to be at peak fitness in time for Brazil's World Cup campaign in Russia has remained a source of intrigue and Neymar told reporters last month he was eyeing a return to training on May 17 – two days before PSG's final game of their triumphant Ligue 1 campaign against Caen.
Speaking at a news conference to preview the champions' trip to Amiens, Emery offered hope that the 26-year-old might come back ahead of schedule.
"Regarding Neymar, I do not know exactly when he will come back – Friday or Saturday – but he will come back to be here with us," said Emery.
"Training with the group? For now, I do not think so. I do not know – we will see when he arrives."
Emery added: "We want him to be with us. He will first come to work individually with the physio, then we want him to be with [us]. When he is well, he will return to training."
Neymar has scored 28 goals in 30 competitive appearances for PSG since arriving for €222million from Barcelona.
