Arsenal "might" succeed in the Premier League but not going no where near the Champions League title. Manchester City are not having their primary aim targeted at the Premier League, already won four in a row what more do they need, I feel they are willing to sacrifice the PL title for the Champions League, having lost to Madrid, guess we don't plan seeing that happen again.
Football is not about how much worth a player, players can be bountifully purchased but under perform, take a look at some Chelsea players. Arsenal has the squad but they feel a lot relaxed once they begin topping the table.
If Arsenal again fails to meet expectations in the Premier League and Champions League next season, in my opinion Arteta deserves to be fired, and Arsenal must have the courage to spend more money to appoint a more experienced coach. Arteta main priority is to end the Premier League title drought which has lasted for two decades, the Champions League trophy is still too difficult for them. The existence of Manchester City makes it difficult for Arsenal dreams to be realized at the domestic level, especially in the Champions League which has more elite teams. However, what Arteta has done in the last two seasons deserves appreciation, he has succeeded in managing Arsenal to get better every season. We realize that Arsenal has all the attributes needed to achieve success, but the front line of Arteta squad still needs to be improved.
Arsenal does not have the habit of firing coaches even though they have failed for several seasons. Arteta has proven that Arsenal has improved with him, so Arsenal management must be more supportive of his plans by giving him more spending budget and making good use of the transfer market. So far in the last two seasons, Arsenal has performed better, but is still lagging behind because the winning mentality does not exist in this team.
Don't blame Manchester City for the failures of Arsenal and other teams, Manchester City has its own way of dominating. Other teams including Arsenal simply failed to take advantage of opportunities to be consistent as they led the standings, so it was only Arsenal's own fault when they came under pressure.