ARSENAL
Well for Arsenal, it's different. It's clear that Wenger was failing, but he's gone. Emery is in now, and Gazidis is implementing his catalyst for change.
The club's overall revenues are still high, and the Club Level expansion will ensure its match-day revenue is higher. Moreover, the new sponsors,and a potentially higher league finish could ensure the club gets more to spend.
There is a lot of competition for the top four, also. But with a resurgence, and new players and methods/tactics, there is no reason why the club cannot achieve this. It won't be easy, though it is attainable. Some serious revisions, however, need to be made defensively and structurally if the team is to progress.
Players such as Torreira have been bought to add steel, and Sokratis Papastathopolous is a no-nonsense defender who can provide more grit in the defence. It remains to be seen if they can improve Arsenal structurally, but witnessing the development first hand can be exciting.