They will compete with strong teams from all over the world for the UCL and it is a highly competitive tournament. That's why I think the priority should be the EPL championship, which is a little easier. We already know that they are fighting for the EPL. They have been trying to achieve this for years, but I want to believe that they can achieve it next year. Arteta must be rewarded now. His reward is the EPL championship.
The competition in the champions league isn't any new, rather it's something I believe is known to almost every team at this point such that they are aware of it even before the struggle for the qualifications. It will actually be much easier achieving the championship than the champions League, the competition to be faced at both points are different and aren't the same so Arsenals superiority will be more pronounced and be of advantage to them in the championship than it will be t the champion's league where they are contending top team form other leagues across Europe, teams who won their leagues and those who finished as runner ups.