If the old coach had led Atalanta to win Serie A, I highly doubt that the Atalanta board would have fired the coach, so it seems to me that the Atalanta board is adrift. If this new coach can't keep the team in the 4th position, then the Atalanta board will fire him.
When the board of a club gets used to reaching the European Champions League, but doesn't win the title, they start thinking that it's the coach's fault and that when they hire another one, then everything will be easy, but the harsh reality becomes clear in the middle of the season when the club with the new coach doesn't even reach the 6th position. I believe that this will happen with Atalanta
I was surprised when I saw that Yuric would take Gasparini's place. Of course, getting a place in the Champions League was not easy for Atalanta, but Gasparini definitely deserved credit for that, and Yuric, in my opinion, is a mediocre coach, with whom Atalanta will definitely not be able to finish the next season in the top 4. But I think that he will not stay at Atalanta for too long, especially if the management is ambitious. And as far as I know, Gasparini decided to leave Atalanta on his own, he was not fired.