The problem of Arsenal is lack of consistency they always start the league very well sometimes they will be the ones topping the league and before you know it they will start losing form and then drop to second in the league table and then remain there till the end of the season, well Arsenal didn't have good striker that will be giving them goals this was also a big problem to them, they needed someone that will be creating chances and scoring goals, Arsenal are good they play very well, and I believe they can lift the league.
Right now arsenal has a very good striker they just signed him and I know the way Arsenal plays will change to better, you are right the coach needs to speak to the players so they can be strong and lift the premier league trophy, the coach is a wonderful coach but he needs to do well in speaking the spirit of winning trophy to them, I believe next season will be a good one for them.
Hahaha, seems like we are many that already knows that teams sickness and problems on this very issue. Since I started watching football I have always known Arsenal by this particular trend of starting good and finishing bad. Since the days Wenger after that his invisible team. Arsenal took a new turn, maybe it was because of the new stadium they were building them that made Arsenal not to spend when teams like Chelsea and Manchester City were splashing money then.
Arsenal that that time will top the league but when it gets tough, they will be pulled down that's when they start struggling for top 4 then. And now, the only difference is that, they don't struggle for top 4 again but it's still the same old story of them not winning the league.