Neymar pledged to "come back stronger" after Paris Saint-Germain announced on Monday that the forward needs would be out of commission for three to four months following ankle surgery.
Neymar" has had many recent periods of instability in his right ankle, according to the club. It also stated that its medical personnel" suggested a ligament repair operation to minimize a substantial risk of recurrence." The Brazilian sustained an ankle injury on February 19 against Lille in Ligue 1.
Neymar said he wouldn't let his most recent injury get him down.
With an emoji of hands in prayer, he said, "I'll return stronger".
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Neymar will undergo surgery in Doha "in the next few days," according to PSG, which Qatar controls, and it will take "three to four months" for him to practice with the squad again.
Given that the Ligue 1 season is to expire on June 3 and the Champions League final, should PSG advance, would take place in Istanbul a week later, Neymar will not be able to play any further this season.
PSG, who has yet to win the Champions League, will attempt to overcome a 1-0 first-leg disadvantage against Bayern Munich on Wednesday in Germany.
Before the World Cup break, Neymar, who has scored 18 goals for his club this season across all competitions, was in excellent form for the French champions.
Nevertheless, since his return from Qatar, where he had the same ankle injury while playing for Brazil, the 31-year-old has scored just three times in nine outings.
In his nation's 2-0 victory over Serbia in their opening match, he was forced off with a sprain and did not return during the group stage.
The former Barcelona player returned in the elimination rounds, but Croatia ultimately defeated Brazil on penalties in the quarterfinals despite Neymar giving Brazil the lead in the extra period.
He has already experienced injuries at World Cups.
He shattered his vertebra against Colombia in the quarterfinals of the 2014 tournament, missing Brazil's loss to that nation by a score of 7-1.
When Neymar joined Paris Saint-Germain for a then-record 222 million euros ($264 million) from Barcelona in 2017, PSG frequently worried about his physical condition.
In 173 games with PSG, he has scored 118 goals, although he has also missed more than 100 games because of injury or suspension. He has only participated in 49% of PSG's Ligue 1 games since his arrival (112 out of 228).
He could not participate in the second leg of PSG's Champions League match against Real Madrid during his first season there due to a fractured metatarsal. They lost that match.
He didn't play for his club again that year, and he was in a race against time to be healthy enough to represent Brazil in the World Cup in Russia that year.
The year after, PSG was eliminated in the first round of the playoffs because he missed the match against Manchester United due to a second metatarsal injury.
Presnel Kimpembe, a France centre-back who will miss the rest of the campaign owing to an Achilles injury, will also not be playing for PSG against Bayern on Wednesday.
Neymar entered the field on crutches on Saturday to join in the celebrations of Kylian Mbappe's club-record 201st goal.
Mbappe and Lionel Messi have combined for eight goals and four assists in his absence throughout three games.