Even Chelsea are not that stupid to let these 3 go and Odoi on top of it.
He is more a Callejon in terms of style (not talent) than an Insigne IMO. I would be surprised if he played on the left, i see him on the right.
The fee can only be measured in hindsight, for BvB it is a great deal regardless, Chelsea we will have to see. Only sporting wise, i think they overpaid, but i guess they wanted to do the deal quickly before other clubs come in the summer and they may end up selling a player or two and then clubs will know they are even more desperate. And then he is American, so marketing wise it makes sense too.