That's some wild speculation there and I think I will go completely against it because arsenal don't have the tenacity to actually win the champions league yet although they have a great team and also playing pattern the winning power isn't just there and besides they were paired against their arch nemesis that always get the worse out of them which is Bayern Munich so they should first think of a way to eliminate Bayern Munich first before setting hopes for dreaming about securing the trophy.
You're still among those set of people that's underestimating the performance of Arsenal this season. It's been quite a boring road for this particular club but they're aiming to compete with flying solid strategy, not giving up because there's more to accomplish this season. This is one of the major reason why Mikel Arteta is doing a great job to ensured everything works perfectly for them this season but winning the UCL title, it's going to be a rough run for them but nothing is impossible to happen and nothing is also possible to be triggered.
I don't see this as a case of underestimating the performance of Arsenal or their ability aswell but I think it's just obvious that the champions league isn't where they are able to really display their abilities well enough as it doesn't avail them that opportunity a s environment to thrive and sometimes it feels like they lack the technicalities to be able to tackle the champions league well enough to get to the finals before thinking of lifting the trophy.
Manchester city and Re Madrid happens to be the team with the most levels of expectancy in the champions league because of their experience and how capable they have appeared in the champions league, Arsenal has always been used to knowing how to get to the champions league quarter finals but js always been challenged to be able to get pass that stage because the have been lacking the technicalities that's required to pass that stage because they keep using the same method over the years even when it's isn't working and that's why they are unable to get pass that stage.
In the champions league Arsenal only knows how to get pass mediocre teams in the group stage and probably knock out beyond which they literally have to struggle so had a d in most cases they don't get to win so they have to exit the champions league and try in another season if they are able to qualify, Arteta is actually doing great with premier league but needs do better for champions league.