The 40-year-old will play his final game for the club on Saturday, when the Serie A champions conclude their campaign against Verona at Allianz Stadium.
Buffon intends to bow out on a high after 17 hugely successful years in Turin and says he had planned to retire until only a couple of weeks ago, at which point he received some “exciting” offers.
“Saturday will be my last match with Juventus and I do believe it will be the best way to conclude this amazing adventure,” he told a news conference.
“I’m going to play a match on Saturday and this is the only thing that’s certain. I’m having continual discussion with Andrea, who knows what is happening around me and is an advisor I don’t want to lose.
“Until 15 days ago, it was clearly known that I wanted to stop playing. However, since then, some proposals and exciting challenges have arrived, from off the pitch as well.
“My fear was to end my spell at Juventus as a ‘finished’ player. I’m proud to say it’s not like that. Until the end, despite being 40, I performed above my standards.”
Agnelli said: “Gigi has roles both for off the field in our world and from other teams. He knows he has my full support, whatever he chooses to do.”