The Eagles are tight against the salary cap.
When you win a Lombardi Trophy, have many talented players, and pursue talented players aggressively, that tends to happen.
But that also means they have to do some juggling.
Of course, that’s money that will have to be accounted for in future years, but that’s the cost of collecting a good team and keeping it together. It’s also enough cap room to sign their rookie class and have a small margin to make other moves.