"I felt good, comfortable", he said. "I know that people are a little nervous, but nobody is more so than me, no-one is more anxious to make a comeback than me".
The world's most expensive player was injured on February 25 playing for PSG against Marseille in the French league.
But the 26-year-old striker has sought to play down the talk of another move.
"The expectations are very high, not just from the fans but from me as well, that's why this is the biggest challenge I'm facing".
Laurel or Yanny? What we heard from the experts
That's the question as a short audio clip has sparked a social media debate about whether the word is "yanny" or "laurel ". He adds that hearing is passive whereas listening is when people try to interpret what they have heard.
Messi and Neymar were teammates for four years in Catalonia, so it's no surprise that the Argentine doesn't want the move to happen. "It is my goal".
Both Messi and Neymar will hope to make a significant impact on the World Cup in Russian Federation in June.
All but one of coach Tite's starting line-up in World Cup qualifiers was confirmed in the squad Monday: Alisson; Miranda, Marquinhos and Marcelo; Casemiro, Paulinho, Renato Augusto and Philippe Coutinho; Neymar and Gabriel Jesus. Brazil are aiming to add a sixth star on their shirts.
Sword-wielding militants attack Indonesian police, killing one
While the police managed to shoot four of the attackers, the remaining five escaped, said the police chief of Riau. The bombing followed separate attacks on three churches, also carried out by one family, in the same city.
However, PSG president Nasser Al-Khelaifi is "2000 per cent" sure Neymar will not leave the club in the next transfer window.
Team Doctor Lasmar said,"Neymar should be able to "regain match fitness" when he takes part in friendlies against Croatia on Jun 3 and Austria on Jun 10".
Messi and Argentina begin their World Cup campaign against Iceland on June 16 after having lost on penalties to Germany in the final in 2014.
Brazil have been drawn with Switzerland, Costa Rica and Serbia in Group E of the fixture.
Malaysian politician Anwar Ibrahim walks free after royal pardon
US investigators say Najib's associates stole $4.5 billion from the fund, some of which landed in Najib's bank account. A royal pardon would reverse Anwar's conviction and make him eligible to actively participate in politics.