It is most likely because it will not be easy for Ivan Juric to continue what Gesperini has built in the last few seasons but I am sure Atalanta management is aware of this, they did not build a team with a lot of money to bring in many quality players so it is only right that Atalanta management should give Ivan Juric time to go through the process of building the team slowly.
Gesperini has been Atalanta's manager for a long time. It's probably 9 years. Atalanta hasn't won the title, that's right. But Atalanta is a team that doesn't spend a lot of money on building a squad. And even then, with Gesperini's help, Atalanta has been able to perform quite well. We have seen Atalanta perform well against every big team in Serie A. That's why I would say Gesperini is successful. He has been able to get a strong performance out of a mediocre squad.
It will be difficult for Ivan Juric to get a strong performance out of this squad. Ivan Juric is not very experienced coach. But I believe that Atalanta management will give Ivan Juric a long time. Atalanta is a club that doesn't want to change coaches too quickly. So Ivan Juric will be given time to prove his ability.