It looks like you're referring to CM 01/02 (Championship Manager 2001/2002), specifically patch 3.9.68 — the community’s final and most widely used update for the game.
Enter Patch 3.9.68—the final, unofficial, community-driven masterwork. Unlike the official patches that fixed match engine crashes, this patch rewrote reality. It updated every single transfer from the summer of 2002. It corrected player attributes based on real breakout seasons. It even added future stars like a 16-year-old Wayne Rooney and a skinny kid from Sporting Lisbon named Cristiano Ronaldo. cm 01 02 patch 3.9.68
Here is why this specific update became the definitive version of the "greatest game ever made." The "Final Form" of a Legend It looks like you're referring to CM 01/02