hopefully Arsenal with their young players can fight in the Champions League. However, it's not just Arsenal who have changed. City is probably the most consistent in keeping his team. but new challengers like Man United are also experiencing some changes in the squad. I hope some teams from the Premier League can take important positions in the Champions League. apart from the strength of the teams in Europe which I also don't think the teams from the Premier League can underestimate.
If Arsenal doesn't get unlucky they might go far in the champions league. Arsenal are usually unlucky in the champions league. They might struggle to come out of the group stages only to be paired against Bayern in the round of 16.
I believe Arsenal will be better than they were last season. They have learned and signed more players and they're still signing. They're not just signing any player but players that fit into their system.
The champions league is a difficult trophy to win and it's going to take a lot from Arsenal if they're going to win. Consistency is one thing they will need to win the champion's league, one slip-up and they might be out.