Expectations for Arsenal last season in the Champions League were actually quite good, especially when they performed consistently in the Premier League, to the point where many predicted they could get rid of Bayern Munich in the quarter finals. In fact, Arsenal ended the season empty handed, without a single trophy in their cupboard.
Though in as much as I may feel that it will likely take Arsenal a very long time before they would be able win the champions League but I cannot easily forget there performance this season because unlike most of there seasons this is the season they made so an impact on the champions League, actually to an extent most people were thinking that for Arsenal to have gone that far on the champions league they would win Bayern Munich during that Quarter finals because they were very consistent but Bayern Munich beat them with experience because when it comes to champions league they are one the best because they always qualifies for champions league almost every season.
The fact is that Arsenal team has experienced a lot of improvement in the team since the arrival of Arteta but the last two seasons were one of their best because they came close to winning the English premier league but lost it to Manchester City and last season they were in superb form again as they were seen as one of the teams that will be in the champions league finals since their opponent in the champions league quarter finals Bayern Munich was experiencing a very poor form in the league but Arsenal still lost to them and lost the league title to Manchester City also. Next season is not far they can still go all the way to be champions league winners next season I don't think it will take them a long time to achieve.