The midfielder had been in negotiations for a new deal just a year after joining the club for €12m.
“The deal is reached with PSG,” wrote agent Donato Di Campli on Twitter.
“Marco Verratti will remain until 2018. The contract signing will occur after his return from the game in Gabon.”
Verratti had been heavily linked with Napoli and Fiorentina in recent days.
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