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.
If the Atalanta team does not bring in more new players for next season and only relies on old players, this will also help the coach in analyzing the old tactics that have been left behind by Gesperini. But Ivan Juric also needs to modify it again so that the tactics are not easy to read by Atalanta's rivals next season so it is indeed appropriate to give Ivan Juric time in this regard by Atalanta management. Because the proof of the results that will be obtained by the Atalanta team is when Ivan Juric has played half a season next season.
This is what Atalanta management needs to support to help Ivan Juric create the team he wants, which means Atalanta management must be ready to spend a lot of money to bring in the players Ivan Juric wants, otherwise it will be difficult for Ivan Juric to develop the team with the current players because it does not guarantee that some players will fit Ivan Juric's coaching style.
Ivan Juric is no stranger to Serie A, he is very experienced so we cannot underestimate Ivan Juric too much, although Ivan Juric deserves support and the possibility to be better is still in Ivan Juric's hands.