The 40-year-old captain made his comeback six months after rupturing his Achilles tendon.
âZanetti has something special and you can see why heâs a world class champion,â Mazzarri told Sky Sport Italia.
âWhile the team was suffering, he came on for 10 minutes and gave everyone a sense of calm. To come back at his age after such a long lay-off and be immediately so confident, itâs extraordinary. Heâs bionic!â
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