De Laurentiis is known for his controversial statements and the Italian filmmaker was at it again when he remarked that Ronaldo, not Allegri, was the true coach of Juventus this season.
But he has been unable to win a much-coveted Champions League crown, losing the 2015 and 2017 finals.
Allegri's name shot up the bookmaker's list of favourites to be the next permanent coach at Inter Milan and Chelsea, despite both sides already having men in place.
He will finish his Juventus career with the third most wins in club history, trailing only Giovanni Trapattoni and Marcello Lippi.
He said: 'I'm not going to Juventus or to Italy.
Allegri and club president Andrea Agnelli will hold a press conference on Saturday.
Juve will pick up their eighth straight Scudetto following their final home game of the season at the Allianz Stadium against Atalanta on Sunday.
The Manchester City boss has been continuously been linked with a move to Turin, and speculation has intensified after the confirmation of Allegri's exit. "I am satisfied working with this club, with the people here. Before Ajax I told him I would stay".
"Otherwise, I'll have a year to dedicate myself to my family and that band of crazies who are my friends".