Barcelona star Lionel Messi labelled Neymar a "phenomenon" and revealed he is in a WhatsApp group with the Paris Saint-Germain star and team-mate Luis Suarez.
The trio formed one of the world's best attacks for three seasons at Barca before Neymar moved to the Ligue 1 giants in 2017.
Messi, Neymar and Suarez won two La Liga titles, a Champions League and three Copa del Rey crowns together at Barcelona.
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Neymar has been linked with a return to Camp Nou and Messi revealed he was still in contact with the Brazil forward.