The 26-year-old also reflected on what was a frustrating 2014 World Cup experience on home soil, as a back injury ruled him out of Brazil's humiliating 7-1 loss to Germany in the semi-finals.
And the 26-year-old superstar, now in Brazil training with the national team prior to the World Cup, has done little to quash the rumours.
He added: "I feel good physically".
However, the Brazilian says the speculation is completely off the mark. There are certain difficulties but they shouldn't stop me.
"Of course I'm adapting again, but nothing is too serious".
"Playing in a World Cup is a dream", Neymar said. But that comes with time. "Let's take it easy, there are still many days until the opener and I will be 100 per cent then".
It's a fine balancing act for Brazil manager Tite, who's likely hesitant about rushing his most prized asset back following surgery but knows his tournament would be better served by adequate game time in the buildup.
Tite's men kick off their World Cup bid against Switzerland in Rostov on June 17 but Neymar's first target for match practice is Sunday's friendly with Croatia at Anfield.
Neymar's future at PSG is in doubt even though he joined the French club less than a year ago from Barcelona.