Neymar Jr. is in Brazil according to the player's entourage. He, like other members of PSG's players and staff, has decided to return to his home country whilst football is 'on hold'.
The Brazilian star was reluctant to state exactly where he was under self-imposed quarantine. He wants to continue with his training regime, as given to him by PSG, so that he's ready when football restarts again.
Neymar wants to ensure he hits the ground running after this break and continue the form he showed against Borussia Dortmund in the last set of Champions League matches.