In the Champions League, Arsenal would play as a normal team, winning only a few games before being eliminated. The premier league matches, however, are where their focus and strength would be on to demonstrate that they can win the premier league this coming season after losing to Manchester City last season.
Arsenal is still assembling the team into a formidable one, as we all know, and has not yet attained the status necessary to win the Champions League. They will eventually accomplish that, but it will take them a long year to get the chance to lift the champions league trophy. For this season and the upper one, they are going to place more of an emphasis on the premier league than the champions league.
Arsenal is a competitive club, but I don't see them winning any significant title next season, they will only compete but will relent along the line. Mikel Arteta did an excellent job bringing in quality players this summer, and he is eager to face new challenges, perhapes things are not done that way, waking up and thinking of winning the UEFACL, they need to be consistent in their spectacular performance. Arsenal is developing, and this is not their time to win the UEFA Champions League; they will only compete with elite teams, and it will not surprise me if they are eliminated. We already know which clubs will advance to the knockout stage and finals, and the Gunners are not one of them.
Arsenal is a very strong team in either the Champions League or the Premier League, but even if it is a strong team, it may not be effective in winning the Champions League title, but Arsenal will be a cause of concern for the big teams. Arsenal's main focus should be on the Premier League as the team is unlikely to do well in the Champions League. A good plan for the Champions League should be moved forward with the Premier League as the main focus. Last season Arsenal's injury was the main problem, this season Arsenal manager may want to finish the season with an injury-free team. If Arsenal had fully prepared for the Champions League this season, we would have seen some significant changes in the team, but we didn't see anything from Arsenal, and their main target this season is the Premier League.