The goalkeeper is looking forward to the challenge with his new boss, after being overlooked and angered by the sacked Welshman, who told him he could leave the club
When England international Green arrived at Loftus Road from West Ham United in July, he joined on the understanding that he would be first-choice goalkeeper for his new club. Just weeks later, however, all that changed when Hughes signed Brazilian Julio Cesar.
The 32-year-old former Norwich shot-stopper told the Daily Mail: "I came to QPR looking for a new challenge after six years at West Ham, a wonderful time capped off by promotion at Wembley.
"Kevin Hitchcock, the goalkeeping coach at QPR, is an old mate and I came to work for him on the understanding that I was first choice.
"If he'd said to me 'We're also going to sign someone who's won Serie A five times and the Champions League and is one of the biggest names in South American football', I would have thought twice before signing.
Green, who was soon left to warm the bench following Cesar's arrival, found himself surplus to Hughes's requirements - a situation that left him bemused and angry.
"I'd read rumours in the press about Julio coming, but when I asked officials at the club they dismissed it as paper talk and said he wasn't going to sign. Now that the Brazilian had joined the club I needed to know where I stood," Green continued.
"I asked Mark Hughes. He told me Julio was going to play, that I'd done nothing wrong and that he wanted two top keepers competing for the position. I replied, 'Well, if he's going straight into the first team he's not really competing, is he? Where does that leave me?' Hughes replied, 'You're free to leave whenever you want'. It wasn't quite what I wanted to hear."
Green, who has 12 caps to date for England, feels he was left in the dark by Hughes, and that the QPR board had also played a part in marginalising him.
"During my talks with the club they admitted they had done this with not a great deal of consideration of where it left me," he said.
"It made me realise that I would struggle to play because Julio is a couple of months older than me, and anyone looking in would soon be asking why their top Brazilian, signed on a four-year contract, was not playing," he added.
"I couldn't compete on a financial level and it was out of my control. I also knew Mark Hughes traditionally stuck with his preferred goalkeeper at all his previous clubs."
Now, though, Green sees a fresh opportunity to impress following the dismissal of Hughes and appointment of Redknapp as his successor. He has already started two of the former Tottenham manager's first three games in charge - albeit because a groin injury sidelined Julio Cesar against Sunderland - and believes he will be given a fair chance under Redknapp.
"At the end of his first training session Harry made a point of coming over to me. He had tried to sign me when he was at Portsmouth and Spurs, and it was good to hear him tell me how much he liked me as a keeper," he said.
"It gave me a boost. That's why everyone in football likes him, and that's why he's a good manager. I said my bit about what had gone on and I told him all I wanted was a fair crack at it. He said it was a fresh start for everyone.
"I'm in the jersey now and it's up to me to play well enough to keep it," said Green. "I believe Harry when he says it's a fair fight on form alone so we'll see how it all turns out."