I think the Chelsea coach also knows that so Thomas Tuchel dared to make the move by bringing Aubameyang to Chelsea to be coached differently so that he could prove his true quality to Aubameyang and that is a step that is not wrong because Chelsea are currently in dire need of a player like Aubameyang to add team performance in the Premier League. I believe Aubameyang is still able to adapt quickly in the Premier League this season.
There is one thing about Aubameyang, his form from Dortmund couldn't last. He is not that world class striker that everyone thought of him. But yet he is a good striker that is able to put the ball into the net when other members of his team perform their duty excellently. Aubameyang has nothing to adapt in the Chelsea team, all he needs is to convert sterling chanced and make an average of 2goals in every 5 matches. With that he will enjoy the blues.
I am not agreed with you this statement about Aubameyang because he is still world-class player who can do good in any condition which we watch him in last season when he has done good job for Barcelona it's just because of indiscipline behavior Arteta was not happy with him and not giving him chance otherwise he was still leading striker at Arsenal and done good job for Barcelona but now with the new quality recruitment they change their policy and looking for good profit from his sale.
Most chances he is going to be the best option for Chelsea in coming matches, and we will watch his best as we watch in Arsenal which will bring good improvement in Chelsea attack even their defence is already had good potential for staying at top.