Goalkeeper Buffon saw at close quarters what Rabiot is capable of during their time together at Paris Saint-Germain, though the latter was frozen out since mid-December after failing to agree a new contract.
With his deal set to expire, the France international confirmed earlier this month that he has held talks with Juventus over a move to Italy.
Buffon believes the Serie A champions would be getting a player who offers similar traits to some famous former Juve midfielders, including Rabiot's compatriot Pogba.
"He is a fantastic mix, he has the physical strength of Pogba, who is like a wardrobe, has the personality of Vidal and potentially the dynamism of Marchisio," Buffon said in an in-depth interview with Corriere dello Sport.
"He is incredible, extremely strong, he needs to improve his timing when approaching the opponent's penalty area but he can become a player with 10 goals per season.
"He's also a good boy and a great team-mate."
If Rabiot joins Juve, he would work under the guidance of Maurizio Sarri, who has been named as the club's new boss after stepping down as Chelsea manager.
The former Napoli coach spent the 2018-19 season in the Premier League with Chelsea but has agreed terms to return to Italy, taking over from the departed Massimiliano Allegri at the Bianconeri.
Buffon, who is a free agent after leaving PSG, is confident the appointment is not a gamble, with the club opting to go down a different route as they aim to reign in Europe.
"I have experienced how competent president Andrea Agnelli, directors Fabio Paratici and Pavel Nedved are," he said.
"Those who follow the same path will always achieve the same results, so Juve are seeking the Champions League and wanted to try breaking away towards pastures new.
"It's because the squad is frankly difficult to improve any more. Sarri is not a revolution, nor a gamble. He simply represents an untested path, a whole other story."