Paris St-Germain (PSG) have signed Neymar for a world record fee of 222m euros (£200m) from Barcelona.
The deal smashes the previous record set when Paul Pogba returned to Manchester United from Juventus for £89m in August 2016.
He will earn 45m euros (£40.7m) a year - 865,000 euros (£782,000) a week - before tax from the initial five-year deal, a total outlay of £400m.
The 25-year-old said he has joined "one of the most ambitious clubs in Europe".
"Paris St-Germain's ambition attracted me to the club, along with the passion and the energy this brings," BCC quoted Neymar.
"I feel ready to take the challenge. From today, I will do everything I can to help my new team-matesm," he added.
Paris Saint-Germain are absolutely thrilled to announce the arrival of @neymarjr !!!
?? https://t.co/chFTIcsb7X#BemvindoNeymarJR 🇧🇷 pic.twitter.com/lWk6nIX1S1— PSG English (@PSG_English) August 3, 2017
The French side have arranged a news conference for 12:30 BST on Friday. Neymar will then be introduced to fans on Saturday at PSG's first game of the season against Amiens at Parc des Princes.
PSG reached the last eight of the Champions League last season - knocked out by a Neymar-inspired Barcelona - and were beaten to the French title by Monaco.
Wearing No. 10 for PSG, @neymarjr. Has a nice ring to it, don't you think?! 😃 pic.twitter.com/93EJArPYtk
— PSG English (@PSG_English) August 3, 2017