Villa are stuck at the bottom of the Premier League table, and they are nine points away from safety, after experiencing a disastrous campaign.
The Villains look set to be playing Championship football next term, and Sidwell believes that a complete restructuring of the club, from top to bottom, will be required if they are to bounce back.
"The way it’s been run of late, and the additions have not been good enough," the Brighton & Hove Albion midfielder said. "The only way to save it is a big overhaul - players wise and upstairs.
"The appointment of Remi Garde was a strange one, considering the riches that are going to be in the Premier League next year.
"If they have an overhaul, they will have a chance of going back up, because what they have got there at the moment won’t know what’s hit them when they go into the Championship next year."
Sidwell played for Villa between the years of 2008-2011, when times were happier at the Midlands club.
The Claret and Blues seem to have been going backwards for a number of years now, and this season has highlighted their lack of ambition.
Villa have put together one of the worst campaigns in Premier League memory, as they have claimed just three victories.
Remi Garde’s side have shown no desire to drag themselves away from trouble, and they seem to have simply accepted their fate.
Villa’s fixture list is doing them no favours either, as their next match comes against title chasing Tottenham Hotspur.