Luciano Spalleti was the background problem that started affecting Napoli’s team, he started using selfish interest in making his selections, the management sacked him and signed the new manager Walter Mazzarr.
It is unfair to say it to Spalleti, as he is a coach who helped Napoli to win Scudetto after more than three decades. His name is marked in Napoli history as one of most successful coaches for their club. No party can last forever and he had to leave Napoli but no shame on what he done for them.
Pogba was good at playing football but he has wasted his talent. No more chance for him to join in the football after he will have passed the punishment for his unappreciated act.
He wasted his talent since a transfer from Juventus to Manchester United. His high ego affects his career a lot and in Manchester United, he did not show his best and let his career is affected by many things beyond football.
Pogba shall forget football for 4 years. It may still be possible if he will move to the non european competition but let's see what's gonna be his next decision to save his career as a footballer.
Pogba now is 30 years old and with the 4-year suspension, his football career as a player ends here. It's hard for a player who is not professional with training to return to football at highest level in Europe at 34-years old. If he returns, I guess a possible destination for him is Saudi Arabia.