Just looking at the numbers from Szczęsny transfer you can see how hard is Marotta negiotating when someone is on the last year of contract. He must be real pain in the ass with his offers.
It's very likely to see something like that happen. I think we just don't know who the mid will be.
I actually see us starting De Sciglio and even buying a DC (possibly Manolas) while everything else looks in order. Costa and Berna can just switch sides if needed.