If what you mean is the Atalanta team, I also have no doubt that they will be much better than this season in the next season, but that doesn't just revolve around the best players, it also includes the tactics they have at the moment. they can develop it again in the next season. Because there are many people who didn't expect the tactics that Atalanta had this season that they were able to win the Europa League which was quite surprising because before that no one predicted they could win with conditions like that.
Atalanta has shown a progressive improvement this season, of which if they continue with such progression without any form of obstruction dues to circumstances or situations that my arise, I'm optimistic about them been able to getting to the point where they will become top contenders before the end of next season, Atalanta has got one advantage which has helped them a whole lot against other teams in the Europa and their domestic league.
Their defense mechanism has gotten a very firm firm that got them looking much tougher than even other teams in the Europa such that if they happen to get an early goal, chances are they will win or end that game in a draw but loosing is almost out of it if they are the first scorers in the beginning of the game. Sometimes some team get to show that they can be better and looking good in their form only to come in very terrible the next season, just like ajax did last season and this season in the Netherlands league, Atlanta will need to be consistent if they will be able to maintain their form to becoming better by next season.
The Italian league isn't a very competitive one so they have the privilege of been able to register to maintain a good form and position at the top because if they are able to get there they get to have only very fee top contenders as the league isn't that really competitive that they will be displaced too soon by another top team, they can as much dare to be in the title race for the first time in awhile.