Brazil international Allan will complete a transfer to Everton, Napoli president Aurelio De Laurentiis has confirmed.
Allan is set to finally depart Napoli in a reported £25 million ($33m) deal after repeated talk of a move away from the Serie A club in recent years.
A €100m transfer (£90m/$119m) to Paris Saint-Germain was mooted in 2019 when Carlo Ancelotti was in charge of the Partenopei.
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But Allan is instead now heading to Merseyside to link up with Ancelotti again at Goodison Park, De Laurentiis says.