arsenal has a target stop in the top 4 is very reasonable IMO. Arsenal's opponent in the EPL match is Brentford and most likely arsenal will win but after that arsenal will face Tottenham and Liverpool, I'm not sure if arsenal will be able to maintain their position in the standings while man city continues to follow from behind with great potential to shift arsenal's position.
Top 4 will always be Arsenal main target for each season because they miss to play at champion league again and their last appearance on this competition was 2016 and since that Arsenal never reach to top 4 again and one thing for sure Arsenal should be consistent because this is one of the biggest issues since Arteta arrived that they seems always have late start compare to other big teams or playing not stable and if this season they can showed their consistency i am sure their target will be achieved and next month will be tight schedules for Arsenal because besides Tottenham and Liverpool they also will fight against Man City