I think Aubameyang is not as bad as you think and also, Aubameyang's move to Chelsea at that time the coach was still Tuchel. At least Aubameyang and Tuchel also worked together while playing and training Dortmund, so Aubameyang's arrival to Chelsea at that time was indeed a good moment for Aubameyang and Tuchel.
But unfortunately, it wasn't long before Aubameyang arrived at Chelsea and then Tuchel was sacked without any prior issues.
There isn't much of a difference between Potter's style of play and Tuchel's, and aside from that, Potter gave Aubameyang the opportunity he needed to establish himself as a striker who fans can count on as their new No. 9.
Of the six Premier League matches played by Aubameyang, in fact Aubameyang was able to provide one goal. I think that's better than Armando Broja who got 12 games but only has one goal in the Premier League so far.
Also, Aubameyang has two goals and an assist in the Champions League, a record like this as an old player I don't think is bad at all for Aubameyang.
Broja and Aubameyang are in two different classes when it comes to exposure and experience in football, both in the Premier League and the Champions League. For other strikers to come to the Premier League and perform poorly does not mean Aubameyang, who has so many years experience at Arsenal, will perform similarly. I simply believe it was a bad decision and he has joined the wrong team.
But indeed, it is difficult for Chelsea to return to the top four this season, but this sharp decline is not due to Aubameyang. Because the Chelsea coach is also new, so maybe it's natural for Chelsea not to be able to maintain its position in the top four.
Regarding new players who will certainly be recruited, I think that is also a form of gambling, because they will not know whether these new players will quickly adapt or not at Chelsea later.
Graham Potter needed enough time to add his favorite players to the Chelsea squad and also made some changes to Chelsea's pattern of play in order to move the team forward and compete for the League another season, but it's too late for them this season. Although they can compete for the top four, I know it will be extremely difficult.