Neymar has his heart set on a return to the Nou Camp after spending two years in France with PSG.
The Brazil international has scored 51 goals in just 58 games at club level since leaving Barcelona in 2017, but his failure to win another Champions League title has left him disillusioned with his French adventure.
Barcelona are currently considering a move to bring the forward back to Spain, where he formed a formidable trio with Luis Suarez and Lionel Messi between 2013 and 2017.
However, despite the player’s quality, Guardiola has warned the 27-year-old that there is no guarantee that he will continue the good form that he showcased at the club in the past.
“Neymar’s an extraordinary player,” Guardiola told Are.
“But I don’t know [about his return].
“If he went back, would it be the same?”
“I don’t know if he’d be the same player, but you can’t doubt how good he is.”
PSG signed Neymar for a world record fee of around £200million with the hope that he could fire them to Champions League glory.
That has not been the case for The Parisians, who have been knocked out in the round of 16 for the previous three seasons.
Failing to win the Champions League since leaving Barcelona is a problem that Guardiola has also faced, with the 48-year-old coming up short in six seasons combined with Bayern Munich and Manchester City.
“Of course I’d love the Champions League,” he said.
“But the league is what makes the players follow you.
“Every three days you have to win.
”Winning the league in England is very hard and the proof is that Manchester City are the first team in 11 years to defend the title.
“Barcelona have done that many times.”