Higuain, 28, scored a remarkable 36 goals in 35 Serie A appearances this season and is currently in the United States with Argentina for the Copa America.
The striker started in Monday night’s 2-1 win over Chile and cameras picked out Klopp in the crowd, next to Nicolas Higuain, who is the star's brother and representative.
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BeIn Sports reports that Napoli have already lined up Porto striker Hector Herrera as his replacement and that Higuain’s move “should go through very soon”.
Higuain, who spent seven seasons at Real Madrid, scoring 121 goals for the Spanish giants, will not come cheap having bolstered his reputation with 91 goals in 146 appearances in Italy.
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