Neymar completed his world record transfer to Paris Saint-Germain on Thursday when he signed a five-year contract, the French club announced.
The 25-year-old Brazilian earlier broke his contract with Barcelona by paying a 222 million-euro ($264 million, £201 million) buyout clause. “I am extremely happy to join Paris Saint-Germain,” said Neymar in comments posted on the English language version of the club's website.
"Since I arrived in Europe, the club has always been one of the most competitive and most ambitious. And the biggest challenge, what most motivated me to join my new teammates is to help the club to conquer the titles that their fans want.
"From today, I will do everything I can to help my new teammates, to open up new horizons for my club and to bring happiness to its millions of supporters around the world."
PSG confirmed that Neymar will be officially unveiled in a press conference at their Parc des Princes stadium on Friday.
They have cancelled coach Unai Emery's press conference which had been scheduled for later in the day.
Neymar will then be presented to the club's supporters on Saturday afternoon ahead of their opening game of the new Ligue 1 season against newly promoted Amiens.
"It is with immense joy and pride that we welcome Neymar Jr to Paris Saint-Germain," said PSG president Nasser Al-Khelaifi in the club's statement.
“Neymar Jr is today one of the very best players in world football. His winning mentality, strength of character and sense of leadership have made him into a great player. He will bring a very positive energy to this club.”
Spanish newspaper El Mundo described the move as a "state signing."
But whilst La Liga protests at losing one of its biggest stars, Barca's players have continued to wish their now former teammate well.
"My friend I wish you the best in everything that comes!!!" Luis Suarez posted on Instagram alongside a picture of the two hugging.
"Also thank you for your support, for everything that I learned with you and for the unique moments that we spent together!!!! Keep like this and never change love you little bro."
Earlier Thursday, Spain's football league threatened to stall the saga by initially refusing to accept the cheque presented by Neymar's representatives at its Madrid headquarters.
La Liga president Javier Tebas had accused the French club of breaching UEFA's financial fair play rules.
Clubs can be sanctioned by European football's governing body for making a loss of more than 30 million euros over a three-year period.
However, UEFA insisted the move will not automatically trigger a failure to comply with FFP regulations.
"The transfer of Neymar to PSG will have an effect on the club's finances over several years but the impact of such an operation cannot be judged in advance, notably as PSG could well sell several players for a significant amount," UEFA said in a statement to AFP.
Barca added that they will aid UEFA in any future enquiry into whether the French side fall foul of regulations.
"The club will pass on to UEFA the details of the above operation so that they can determine the disciplinary responsibilities that may arise from this case," continued the Barca statement.
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