I believe the Lukeman case is as a result of them losing to Madrid, I feel he wasn't happy with that loss and if you check all these Italian clubs always have this one season wonder, that's they perform better in the first season and after that they become awful in the next season, I think that's another reason why Lukeman should leave but still he made a wise choice by leaving the side. The player needs a better club like PSG that are coming for him and I know he'll excel in the French league.
Atalanta need to continue with this form since all other big clubs are losing that strength of getting the job done, Inter Milan especially, they suppose to show why they are the champions of Italian league last season but they played a draw but that shouldn't be why we have to say they're going to perform badly, we just have to wait and even look at how the Atalanta side will play out their 4-5 games before we can say they're good to go.
I don't think the club discussed Lookman's want to leave the club before the Super Cup final against Real Madrid. Atalanta played an incredible game against Real Madrid, drawing in the first half but failing to handle the pressure and conceding two goals in the second half, Atalanta's performance wasn't as good at the beginning of last season as they had at the end of last season, they seemed like they had a difficult time starting the season, Atalanta's beginning this season was different from last season's, and they won the Europa League last season, I have no idea why Lookman decided to leave, perhaps he wants to play for another big team rather than staying this season.
I expected Inter Milan to win their game against Genoa because they won the league last season. I agree with you that we need to wait for them to play their next four to five games to see how they will play, but it looks poor for Inter Milan as they won the league Champions last season; they could have started the season with three points, but they ended up sharing it.
I'm not really saying it was because of the game they lost to Madrid, is like he isn't too happy about the situation after losing that game and they weren't bad in the first half but after that they couldn't replicate what they did in the first half and they should have kept that composure because the Madrid side wasn't as deadly as they used to be. They lost because they lost focus in the game.
For Lukeman to leave it might be that he feels is time to go and I think is best for him with the likes of Man City, Arsenal and PSG eying to get him is a step up for him, after all he has done perfectly well since leaving Everton, with these clubs hoping to get him then he should leave because with Atalanta is will be very difficult to get another trophy, not that I'm saying they can't compete to get trophies but it won't be like last season and the player (Lukeman) needs more than what he got last season.