Not sure it was suggested before or not.
Let a lucky fan become a player...
Sometimes, when a player was injured or fouled out, and no player was on the bench, then there would be a lucky fan to play as a player in that remaining game.
This lucky fan could be a 18yo starter potential or 35yo MVP potential, but we cannot rule out the possibility that he might be a 18yo MVP potential.
Can we give him an opportunity? Managers can only invite a lucky fan when he played for that team before. Related stats could be found in draft page (i.e. the game he played for your team), but need to spend extra scouting points to check his age and potential.
Say, 1 point to check his age, 1 point to check his potential. This should be done within limited period, i.e. from start of season to before all star week.