Creating a player and adding prior season stats

[BlackEagle2407]

so this may seem like a stupid question. I've seen people creating player in the vault that have realistic season stats from past played seasons. How does a person add past season stats to a created player? Or is this something not everyone can do? I'm looking to create Addison Russell seeing as he's been removed from the free agent pool in the latest update but id like to have his real life stats for past seasons.