Redknapp wrote for the London Evening Standard: "It is hard to imagine how bad Sam Allardyce is feeling today but he'll bounce back from this. He worked all his life to get the England job and to go out like he has after such a short time is devastating for him.
"I can't say I agree with entrapping people. You can trap almost anyone in any walk of life if you really want to but that said, Sam made a mistake — he knows he did — and has paid a high price.
"I don't know Sam very well but I know he is a good family man who looks after people in his life. Everyone knows Scott McGarvey in Manchester — he is a bit of a character. He was supposedly down on his luck but thought he had struck on a business opportunity and asked Sam to come along to a meeting to give him some extra credibility.
"But this won't be the last job Sam has in football. He hasn't broken any laws. There will be a team struggling to stay up in the Premier League, they will take one look at his track record and realise Sam is the best man for the job."