Load your roster and delete the player from the created players list. If the player has cyberface ("generated player"), you must change his properties:
-first, the player now must be "CREATED", not "GENERATED".
-second, delete his fsh using any appearance ("0tiharda.fsh" to ABAC, for example).
-Finally enter the game, load again the roster edited and delete the player from the created players list (create player window)
Don't forget to save this changes!