Because Dortmund have also started to find their performance again this season so they will continue to compete in two different league competitions this season, even though Dortmund also does not have great potential to last longer in the Champions League this season.
The same thing happened at UCL. Chelsea's performance has been declining a lot since potter was changing some good players for useless players. It can be said that if chelsea has been fooled by so many clubs to buy useless player. I remember when lampard was still in chelsea. He has been suggested to buy some good players but that's very sad to say that if he has been sacked by abramovich caused by the bad performance of the club.
Being a manager is far difficult than a player caused by the pressure was very big but potter must be included in the exception. Chelsea is now a mediocre team that will get nothing this season.
Don't expect too much from chelsea
but in fact victory is still a hard thing to get, and this season chelsea is like a mediocre team like you said, and when chelsea played for me it wasn't an interesting match to watch because chelsea was not like last season, and also currently chelsea perform badly and always produce bad results in all competitions.
I don't understand how they can still get such unsuccessful results despite spending so much money. Considering that the players were made in line with the request of the coach, better players could be bought with this money. Sooner or later, the unsuccessful results will be billed to Potter.