According to Fabrizio Romano, the 36-year-old centre-back will continue his remarkable playing career until 2023.
Chiellini will arguably be remembered as one of the greatest defenders to grace the game when his career does finish, but that isn't happening any time soon.
Since his debut for AS Livorno in August 2001, one-month before Bukayo Saka was even born, he has gone on to play a further 638 times for various clubs and his country.
He has been rightly lauded across his career and following a 1-0 win in the Champions League in 2018 against Jose Mourinho's Manchester United, the Portuguese manager was full of praise for the Italian and his centre-back partner Leonardo Bonucci.
"Mr Bonucci and Mr Chiellini could give some Harvard University classes about how to be a central defender," he said.
Within his 639 matches have come many trophies, including five Coppas Italia and Super Cups, nine Serie A titles and now a European Championship.
Clearly age is just a number for Chiellini and 21-year-old teammate Matthjis De Ligt will only benefit from the Italian veteran's tutelage should the contract be signed.
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