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.
Looking at what they have played in the past season, it will be a bonus point for Arsenal when they meet with Brentford and it could also be a draw line if they fight hard because of what they did to Manchester United last few weeks, besides it is their home, they wouldn't want to be shamefully defeated by any team.
History always has it that Arsenal always find it hard to penetrate through Liverpool but now that Mane who always create a chance for them is gone, who knows they can protect their defences and focus on attack, Tottenham is the same, it is not a team they can flip with goals.