Higuain has expressed his joy at playing for Napoli.
"Naples is the perfect city for playing football," he told La Repubblica newspaper.
"We will grow together, the team and I. With a long contract, I set myself no limits. Among my objectives I include the Scudetto and Diego Maradona's goal record.
"I have many seasons ahead of me, I am a centre-forward and that means I want to score all the time."
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