Allegri was seen clashing with sporting director Cristiano Giuntoli during the celebrations, though it was a later argument with Tuttosport editor Guido Vaciago which has the club concerned.
There's a suggestion Allegri could be axed for breaching the club's rules for behaviour. Indeed, it's now emerged that Primavera coach Paolo Montero has been called into Juve HQ to meet with directors.
In today's edition of Tuttosport, Vaciago recalled the confrontation: "S****y director! Yes, you s****y director. Write the truth in your newspaper, not what the club tells you! Stop playing tricks with the club."
Allegri then allegedly pulled and pushed the journalist, with an attached verbal threat: "Look, I know where to come and get you. I know where to wait for you. I'll come and rip off both your ears. I'll come and hit you on the face. Write the truth in the newspaper..."