Craig Gordon is determined to overcome his injury problems and return to professional football.
The shot stopper, who was released by Sunderland at the end of last season after knee trouble had forced him down the pecking order at the Stadium of Light, has conceded he may never play again.
But Britain's most expensive goalkeeper, who only turned 30 in December, told The Footballers' Football Show he is still working hard to salvage his career.
"I'd like to think I'll play again but it's been a long hard struggle for me," he said.
"It may or may not happen, I still don't know yet. But I'll keep trying until the day it becomes impossible.
"I've got a patella tendon problem, which I've had for a number of years but it got to the point where I had a couple of operations on it and there was still pain in the knee.
"Until I get into a position where I can get back and change direction and jump and do the plyometric exercises correctly, I still have to try to get that right before I can get back out on the field."
And Gordon insisted, if he was able to get himself fit, he would be prepared to drop down the leagues to find first-team opportunities before working his way back through the divisions.
"I would play anywhere," he said. "If I could get to a level of fitness that would allow me to play I would play absolutely anywhere.
"I'd love to get back and play football. If I can get myself back to somewhere near 100%, no matter where I started, I could work myself back to a fairly high level.
"But first it's a case of getting the knee in as good a position as it can be to carry on."
It's not the first injury Gordon has had to deal with in his career and he accepted on the show that goalkeeper is a position where you are vulnerable to a long list of problems.
"I've had a few injuries as a keeper," he said. "I've had three operations on my arm, which is fine now, three operations on the same knee and a couple of hernias - but apart from that I'm absolutely fine!"
Also on The Footballers' Football Show panel on Thursday was Tottenham keeper Brad Friedel.
The 41-year-old is still going strong and, despite currently being out of the first-team frame due to the form of Hugo Lloris, has signed a deal to stay with the White Hart Lane club until 2014.
But he says there is no secret to a long career between the sticks, except hard work, fortune with injuries and the mentality to keep on playing.
"I took up yoga when I was 30, 31 after I got a quad tear and that has helped me carry on into my 40s but there's no real secrets to it," he said.
"If you can stay clear of injuries, look after yourself and mentally want to carry on you can play well into your 40s. It's when you get unfortunate injuries and large ones, like Craig has had, that it becomes difficult to overcome those."