Coventry City supporter Richard Keys tells BBC Midlands Late Kick Off the club are on a "life support machine".
He is urging Sisu to sell to new investors and says he does not know what will come first - administration or relegation.
Watch more about the Sky Blues' plight on BBC Midlands Late Kick Off.
Late Kick Off returns to BBC One on Monday, 16 January (2305 GMT).
You can also watch the programme again on the BBC iplayer via the Late Kick Off website.