The Champions League trophy still seems a long way off for Atalanta. It's not impossible, but they'd need a lot of miracles to actually lift the trophy. I think the Europa League trophy they've won before is one thing, but the competitive level in the Champions League is vastly different. Achieving success in Serie A, the Coppa Italia, and the Italian Super Cup are more realistic targets, and I believe Ivan Juric understands very well how to set his team priorities.
From a squad depth perspective, I think Atalanta has quite good players, which will make it easier for Ivan Juric to meet expectations. Of course, it will be difficult to surpass the success Gasperini achieved previously, especially since next season competition will be much tougher. Ivan Juric needs to accelerate his adaptation period, his main task is to maintain Atalanta performance so they don't decline.
That means there are still many things that Atalanta need to improve on so chasing the Champions League trophy is not a realistic target that they can achieve in the near future. The Europa League trophy is the biggest they have ever won but when it comes to the competition in the Champions League, it is completely different. The target of winning the Serie A trophy, Coppa Italia, and Italian Super Cup is a more realistic target because they are slowly starting to show one of the strongest teams in Italy.
If they have gone through the experience of achieving several titles, then the issue of pursuing the Champions League trophy will be a little easier because the experience and mentality have been formed for each player. We know that the Champions League requires a lot of resources, besides having quality players, experience and mentality are also needed.