The striker hit a hat-trick in their thrashing of Hellas Verona.
"I'm delighted that Gonzalo scored yesterday but I've never been concerned about his goal drought, and neither was my brother," the striker's brother Nicolas has told Radio CRC.
"Let's say that he had a few chances to score yesterday. Luckily, he tried his best and it went well.
"But I must say that no representatives from either club have contacted me. Shortly before he arrived in Naples, I was in contact with Arsenal."
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