It is just unbelievable that Juventus have been kicked out of Europe. It is due to problems related to financial fair-play. I thought it would have been limited to only the 10-points punishment in the league. But the problems have got bigger for them by this news. However they were going to join the Europa Conference League so this isn't a huge loss for Juventus I think. But if that happened for the Champions League spot then it would have been a big hit to them of course.
Financial fair-play is clearly detrimental to Juventus in the next season because they will not play in the Champions League due to the mistakes they made and fortunately Juventus do not get much heavier sanctions because the Italian football federation only gives a 10 point deduction sanction. If Juventus do not receive a point deduction sanction then it is possible to finish in third or fourth place then Juventus will automatically play in the Champions League next season.
Juventus will start off with a clean slate from now on. Allegri is still here though but maybe things might get better in time. In the end they have a really good history with Allegri hence there is always a chance to do better than this with him.
Next season will be the starting point for Juventus to start again and I believe Allegri will try to do better with the combination of new players they have acquired in the transfer market. Juventus has a long history in Serie A and they are one of the best clubs ever, so a slight setback is the way to regain dominance in the League.