~Snip~
The champions league is still going to elude them if they are not in any way making preparations for it because he competition in thw champions league will be even tough than it has ever been as all other teams are seeing how the preparations by others are intensifying because the champions league as known by everyone is really very competitive. The premier league is too but facing teams like Madrid and other top winners who have emerged from other leagues is something we wouldn't want to even for any reason undermine as it will be to the detriment of the team.
Arsenal not only had difficulty winning the Champions League, they also had difficulty competing in the EPL, their only weakness was their inconsistency in maintaining their performance. Arsenal is a strong team, they are ready to challenge in the title race, but they often run out of gas towards the end of the competition.
To win the Champions League not only requires preparation such as building a stronger team, but also requires a consistent mentality and performance. The highly competitive competition in the Champions League requires any team to always maintain its performance. Real Madrid has succeeded in doing something that Arsenal has never been able to do so far, which is why they often achieve success in the UCL.