I think Chelsea are looking for a way to let go of sterling, ziyech etc all in this January transfer window and many more players are to go by the end of the Summer. I think players like Pulisic will be among and if all this were to come to past then you'll see the need of us getting as much players in as we're doing. Chelsea current players are underperforming and that's not good for business so the American businessman is just trying to save his business while he still can.
I can't tell if those players are really the major problem to Chelsea's poor performance and Chelsea selling those players to be a guaranteed way in solving Chelsea's current problem.
Note, there is a particular manager who will come in to handle Chelsea players in there right now and you will be shocked to see how good this players will be playing.
For instance is with what happened after the sack of Thomas Tuchel and the take over of Potter, we all saw a change in their performance way up to about six or more matches they played, but this same players were same players in there playing rubbish which led to the sacking of Tuchel.
However, it will also make sense if they are trying to bring in a new set of players in the club to see if things could change and letting go players like Sterling, Kante, Aubameyang and Ziyech who has been finding it difficult to see form and net.