Owner Randy Lerner has failed to find a buyer for the club after putting it on the market more than two years ago.
Former chairman of the Football Association Bernstein was appointed to Villa's board earlier this month during a shake-up.
Chief executive Tom Fox and sporting director Hendrik Almstadt both left last week during chairman Steve Hollis' review of the club
Former governor of the Bank of England Mervyn King is also a new director while Bernstein will head up a four-man football board to oversee the playing side of the club.
Villa, bottom of the table and 12 points from safety, are set to be relegated from the Barclays Premier League and Bernstein knows it will be a struggle to find new owners
He said: "I'm just stating the obvious, that when a club is in decline and relegation starts to be threatened it seems fairly obvious that the attraction of the Premier League - which is frankly what most owners are looking for - becomes less certain
Then there are bound to be issues about selling it
"That seems fairly obvious but I haven't been involved at all in the process and I don't know who he has spoken to or not
The club must be more difficult to sell now for any decent sum than it was a year ago
"I believe he (Lerner) is obviously devastated the club is where it is but he should be given great credit for a lot of terrific work he's done over the years."
Speculation also continues to surround boss Remi Garde's future after Villa's sixth straight loss following their 1-0 defeat at Swansea on Saturday
Bernstein has held extensive talks with Garde and conceded he is in a difficult position but was impressed with his professionalism
He said: "I had two and a half hours with him at my home last Wednesday
He came down and I had a very good meeting with him.
"He is a very civilised, dedicated, professional and passionate person.
"I have only met him once and I've got a lot of respect for him already but he's got a very tough job on."
Source : PA
Source: PA