If a player doesn't renew by the end of the season, they are dropped, but there's nothing that will drop a player during the season. We've discussed bouncing inactive users after a certain time period, I have some ideas on the table about it, but haven't fleshed them out yet. I have added logic that the AI will re-sign players in the end-of-season league if the owner is not returning - this was just added, so it hasn't fired yet. I added this after seeing what happened to several teams at the end of this last season in MFN-1. I think MFN-2 and MFN-6 haven't had the end of the second season yet (which is when the biggest issues are)