The Brazilian, who is now injured and faces a race for fitness before this summer's World Cup in Russian Federation, is also thought to be a summer target for Premier League duo Manchester United and Manchester City.
"I believe that if he stays at PSG he will not become the best in the world", Rivaldo was quoted as saying by Globo Esporte on Sunday. He has to leave PSG. "I'm talking about football, about competition", the 2002 World Cup victor, who played for Barcelona from 1997 to 2002, added.
The 26-year-old Brazil striker is recuperating in his homeland after undergoing surgery on his foot, but he has claimed he should be fit by May.
"Barcelona, in his situation, is hard". For him to be the best in the world he has to play in Spain.
There have been many rumours surrounding Neymar's future at PSG, with many reporting that the Brazilian is unhappy at the French capital.
Would you like to see Neymar at Real? And with the strained relations existing between Neymar and PSG boss Unai Emery, it seems nearly inevitable that the Brazilian will leave the Parisians in the near future.
Real Madrid have been heavily linked with a move for Neymar with reports in Spain suggesting via Marca suggesting that he is trying to manufacture a move back to La Liga. Moreover, Neymar's quest for world domination is still a long shot considering Cristiano Ronaldo's form and Lionel Messi's performances in recent weeks.