Juventus may be interested to sign Conte as the replacement for Allegri but I doubt Tottenham will allow him to leave. Since Conte managed Tottenham, there is a good improvement in this club performance. Tottenham management must try to keep Conte, they will offer an extension for Conte's contract. And I am sure Conte probably accepts the extension to ensure Tottenham plays well until the end of the season. I don't think Conte to leave what he just begins in Tottenham.
Juventus is better to look for another option to replace Allegri. The chance to sign Conte seems rather small.
Even things are not good in Juventus but still there is no fair chance for sacking Allegri and bringing new coach because few days back Juventus management already announces they have faith in him, and they are looking for positive development in coming weeks which is good decision from them because sacking coach in hurry is never been bringing positive results.
Conte is not leaving Tottenham until end of this season with this most chances if Juventus management feels to have some changes then surely they will do this all at the end of this season with there could be some more options also available but right now doing like this is surely more mess up not good for team as we all know having extension was Conte's decision, so he will not leave just after few weeks of this season.
Yes, sacking a coach hastily never brings positive results and there is nothing wrong with giving Allegri a chance and hoping for a change. If not, maybe firing him is the right choice.
It is not easy to find a replacement for a new coach to build a better team in such a short time even though Juventus have a good squad there will still be a process to build it.
and it is reported that Antonio Conte welcomes the idea of returning to Juventus as he prefers to be in Italy, but Tottenham are reportedly only willing to let Conte go to Juventus at the end of the season. And as for Del Piero, it is reported that he took a coaching course to earn his UEFA Pro licence, the highest certificate required to coach in Europe's top leagues all the way to the Champions League. Which in my opinion is too early and also inexperienced to be a top coach.