Coombs is absolutely right that you need to refresh the team. But I am a bit in two minds regarding Aubameyang.
As much as I want to build a young and competitive team, and realise that a lot of value is stuck in the top end of the squad, you need to have some quality veterans to hold it all together. We saw that with Fabregas and company. So there is a much stronger case for getting rid of all non-value adding veterans first: Ozil, Lacazette, Mustafi, Sokratis, Luiz, Kolasinac etc. and then reinvesting that money into some really high quality pieces that can create a firm framework for the kids. If we dumped those guys, kept Aubameyang, and then brought in guys like Partey and Upamecano. Upamecano is young but he is top 3 on so many statistical measures in his league and mature. That would give you a great structure without the poison of our useles veterans. Plus you have Leno.
And then you can keep developing so Saka, Pépé, Saliba, Upamecano, Martinelli, Guendouzi, Bellerin, Nelson etc all mature together. And keep adding other veterans / mid career pieces each season. Given the state of this league, well-coached that group is good enough to make top 4 next week. And with good buying we are in a title race within 2-3 seasons.
You need to be competitive during transitions, and Arteta has raved about Aubameyang’s work ethic. We can use it to set the tone for the rebuild