Juventus official Fabio Paratici defended Gianluigi Buffon and gave an insight into the state of contract negotiations with Paulo Dybala.

The criticism of the experienced goalkeeper Gianluigi Buffon annoys Juventus, sporting director Fabio Paratici admitted.

Buffon was guilty of conceding Francesco Caputo's goal in a 2-2 draw with Sassuolo on Sunday.

The 41-year-old, who just completed his fifth Serie A start of the season, sent a tame shot through his grasp after Matthijs de Lig's panicky game.

Maurizio Sarri later freed Buffon from the blame and Paratici felt that the Italian legend deserves more respect than he has received in some circles.

"The criticism of Buffon bothers us very much," Paratici told Sky Sport Italia.

"I always say that Buffon, [Leonardo] Bonucci, [Andrea] Barzagli and [Giorgio] Chiellini are the heroes we've had over the years. They are great people first and then great players. If they have bad days, which is very rare, this is proof that they are human.

"Buffon is a great goalkeeper, the greatest in football history and, above all, a great person."

The glaring error left Juve behind at the beginning of the second half and a poor team performance improved only after the introduction of Paulo Dybala in the 53rd minute.

The Argentinean international has been in great form in recent weeks, winning the penalty which Cristiano Ronaldo has equalized.

With Dybala apparently on sale last season, it's time to apply for an improved deal at Allianz Stadium.

"He is a great player, our number 10 and not by chance," said Paratici. "We are not talking about renewal, but we will tackle the matter in due course."

Paratici confirmed that the outraged attacker Mario Mandzukic could leave the club in January, but gave no insight into the future of Merih Demiral, Daniele Rugani and Emre Can, which were also associated with other actions.