Arsenal started this season slowly which is worrying. They began last season strongly but lost speed. This season Liverpool and Manchester City are playing better and more consistently making it harder for Arsenal. Chelsea is also improving. If they want to stay in running for title Arsenal must fix their problems including injured players.
I'm surprise you guys are saying that Arsenal did not start well on this season, that's actually contrary to it because I recall that Arsenal started very well with there best performance, let me elaborate to you how they started on this season, there first premier League match was against Wolves and they won 2:0, there second match was against Aston Villa on there home and they still win with the same number as Wolves which is 2:0, there third match against Brighton was a draw 1:1 and there fourth match against Tottenham Hotspur was still good for them and also win the match, that's total of three win out of four and draw one, so which other match did they not started well?, it was actually later on they were doing what you are saying but definitely not on the starting state, however since they are on the fourth position all they need now is there previous speed they use at the beginning because they are 9 point below Liverpool but is still not bad on were they are because already people were speculating they will not win the league so if that is what will happen they should just maintain there last season results of qualifying for the champions League.