If particular players are found to have taken money, and then go to another school. That could cause problems with the new school because the player would be playing while "ineligible". That's where a lot of the "vacating wins" comes from. A player is proven to have been paid and is no longer amateur and all games he played in and won are vacated. So a school that takes a player and if he plays in a game that school could have to vacate games even if they didn't do the paying.