The Brazilian scored 105 goals in four seasons with Barca and formed the deadliest front three in world football with Luis Suarez and Lionel Messi, winning two La Liga titles and the Champions League.
When Barca and Neymar were at the peak of their powers in 2017, however, he shook world football by heading to PSG for a record-smashing 222 million euros ($269.89 million).
Neither he nor the Catalans have been the same since.
Neymar may have scored 79 goals and won three Ligue 1 titles in a row as well as reaching last season’s Champions League final, but he has never looked entirely happy in the French capital.
He squabbled with team mate Edinson Cavani in his first season over penalty taking duties and in 2019 hit out at a fan following his side’s Cup final defeat by Stade Rennais.
His form has also been interrupted by serious injuries in 2018 and 2019, while he was carried off on a stretcher in tears in Sunday’s 1-0 defeat by Olympique Lyonnais in the league with an apparent ankle injury.
He is due to have further scans on Monday.
He even sought a return to Barca in 2019, refusing to train with PSG to try and push through the move, which collapsed as the Catalans were not willing to meet his asking price.
The saga deepened tensions between Messi and president Josep Maria Bartomeu, with the Argentine saying he doubted whether the club had done everything they could to make the deal happen.
Bartomeu resigned in October amid growing discontent, but Neymar is unlikely to ever play for Barca again.
