However, he had to watch last weekend's 2-0 win over Amiens from the stands as the administrative formalities of the deal were not completed in time.
An International Transfer Certificate (ITC) is required for all international transfers, says football's governing body FIFA.
Today the French Football Federation, the FFF, confirmed that they have received the worldwide transfer certificate, which would pave the way for Neymar's debut. He is ready. We want him to be in the squad and to start. That is why the Catalans want to withhold this sum, because Neymar played only one of the five contract years in Barcelona, agreed in October 2016.
Now PSG, funded by their Qatari owners, are smashing their way into that exclusive club and threatening to shatter UEFA's attempts to impose sensible fair play financial restrictions.
Barcelona have made Liverpool's Philippe Coutinho and Borussia Dortmund's Ousmane Dembele their principal targets to fill the gap left by Neymar Junior.
NGAM Advisors LP Cuts Position in FS Investment Corporation (FSIC)
Creative Planning's holdings in FS Investment Corporation were worth $707,000 at the end of the most recent reporting period. Sumitomo Mitsui Trust Holdings Inc. increased its position in FS Investment Corporation by 2.2% in the second quarter.
"Philippe has tried very hard to find an amicable solution to this situation but to no avail", a member of Coutinho's family reportedly told Sky Sports.
There is a potential hitch - at the time of writing the authorities are waiting for the player's worldwide clearance to be received - but the club are hopeful the matter will be sorted out.
"I know all the previous coaches worked with Barca's stamp, that style which is recognised around the world", said Valverde.
Nice had one of the best starts in the Ligue 1 last season with star striker Mario Balotelli firing in full calibre and the club enjoyed a spell on the top of the table.
Meanwhile, according to Spanish journalist Hector Fernandez, Real Madrid have given up on landing the wonderkid, after he demanded a yearly income of €12m - which has been offered to him by PSG.
It's unclear whom the team will choose (if anyone) to join stars Lionel Messi and Luis Suarez in the front three, but soccer fans will likely be watching closely.