The veteran is already in place
The Chicago Bears went quarterback shopping on the open market just last season. They viewed the land, looked at who is available, and they decided on Nick Foles. Part of the reason in which they loved Nick Foles so much was not only that he could start on a moment’s notice.
The biggest impact was that he had a long history of success as a backup and handling his role in the quarterback room. If the team were to draft a young quarterback, Nick Foles is the type of quarterback that you want in the room helping him get used to a Matt Nagy offense.
First off, the Bears speaking so highly of Foles takes them out of the Carson Wentz discussions. Beyond that, a veteran quarterback would come into the room threatened by Foles, and in the mindset to compete with Foles. A veteran quarterback sees the relationship of Foles and Nagy as a head start on him.
A rookie comes in knowing that his time is coming and that Nick Foles is helping him get there. Most teams will build the quarterback room with the veteran and the rookie. The Chicago Bears got their veteran last offseason and now they will get their rookie.