I hear talking about regens very much. There's always very much speculation about who is a regen. I even believed it, but does the regen (from another player) exist in CM4/CM03-04? I have come to the answer that they don't. How I come to know this is simply to look at (big) players retiring and checking out if there appeared someone with same potential, position, nationality. The 2 players I take in this example are Nedved and Zidane. You should say their regens will be easy to find if they exist. More than 4 years after their retirments as football player there still isn't a player with same potential etc. An argument to prove their existince would be that you don't get a regen until the manager Zidane or Nedved has retired, but in my game Nedved completly retired from football (He didn't become a coach). So in my opinion the regen doesn't exist and the ''regens'' just have random potential, position and nationality.