He told avfc.co.uk: "I don't really know the timescale yet, it depends on the op. It's probably going to be between six and nine months, but that's roughly what I'm looking at.
"One thing's for sure, I'll work hard and do everything I'm told to do so I can be back as quickly as possible.
"I was delighted to get the loan move. The gaffer thought it would be a good move for me and so did I. Leeds is a massive club and I was really looking forward to it.
"I trained Thursday and Friday and was buzzing. I was in the starting line-up against Swindon on Saturday and then it all went wrong."
He continued: "There's no point in being negative now. It's happened and it's one of those things. It's a bad injury, but these days they can fix them pretty easily and I'm going to stay positive. I'm already looking forward to getting back.
"Years ago this was an injury that could have ended my career. Even 10 years ago it was a major injury.
"I was talking to Patrik Berger and he had the same injury when he was 19/20 years of age. So he's given me some advice and told me not to get too down.
"If I can go onto have the great career that Patrik Berger's had, I won't go too far wrong. He's had a great career and he's still going now.
"All the lads have been great in the last few days and now I'm just looking forward to having an operation in the next few weeks and getting on the road to recovery."