Some players suggest a possible option, but following this approach means no franchise-changing athletes ever get traded.
For example, it would prevent moves like:
Such restrictions keep major roster shake-ups from happening in the game, maintaining balance but reducing trade realism.
"No franchise-altering player is ever getting traded."
Author’s summary: The post discusses how certain trade rules in Madden franchise mode prevent star players from being moved, which limits realism in gameplay.