The Argentine is Serie A’s runaway top scorer with 24 goals this season, although he hasn’t found the net in his last four games.
Napoli were dumped out of the Europa League by Villarreal on Thursday evening but the Italian club’s chief insists coach Maurizio Sarri is not responsible.
“I have nothing to blame Sarri for. Napoli played a good match but you can’t say we were unlucky,” said De Laurentiis.
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“Regarding his renewal, Sarri has a contract with four options, and it is unilaterally up to me to renew it within a given month of the year within the pre-established figures.
“Higuain should dispose of a pound and a half more than he has, as it is almost like he is walking around with a brick in his pocket at the moment.
He has to regain his physical form from a month ago, and then also return to scoring goals. However, all of our 24 players can play a part.”