Neymar Sr. says his son will not sign a new Barcelona contract until tax "concerns" are straightened out with Spain.
Brazil is also inspecting Neymar's finances.
Neymar Sr. told Radio Barcelona show "Què t'hi jugues!" that talks with Barca over extending the player's current contract which ends in 2018 had begun, but nothing would be signed until there is clarity over the tax situation.
"We are talking about renewing but there are things outstanding still to resolve, which have us a bit worried," Neymar Sr. said. "There cannot be these tax concerns from not knowing if we are doing things correctly.
"We must know if Spain accepts our situation. It is hard for us because we are receiving many attacks, from Brazil and from Spain, in tax matters."