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Lionel Messi posted a heartfelt farewell...
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...as did the other member of the MSN triumvirate, Luis Suarez.
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Gerard Pique also posted an emotional good-bye - just days after hinting Neymar would stay.
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Barcelona captain Andres Iniesta joined in the farewells.
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Sergio Busquets, who had spoken about Neymar's transfer earlier in the summer, added his own message.
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Javier Mascherano posted this picture and message to say good-bye.
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Ivan Rakitic will no doubt miss having Neymar in front of him to pass to.
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Jordi Alba said he hoped all of Neymar's dreams would come true.
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Sergi Roberto posted a picture of himself and Neymar in happier times.
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Samuel Umtiti gave thanks for 'one beautiful season' with Neymar.
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Fellow Brazilian Rafinha posted a short, sweet message.
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Marc ter Stegen made it a point to highlight Neymar's fun-loving personality.
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Brazil legend Pele congratulated his compatriot on the move.
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Fellow Brazilian Lucas Moura was the first PSG player to welcome Neymar.
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And another of PSG's Brazilian contingent, Marquinhos, also welcomed his new teammate.
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Marcus Rashford added his congratulations to the chorus.