The Australian shot-stopper looks more and more likely to now be in his last season at The Riverside.
But it appears likely the 35-year-old will be allowed to move in the summer.
He said: "Anything's possible. Nothing's been spoken about for many months now.
"Everything's open, anything's possible. Nothing's been decided yet in any way, from the club's point of view and from my point of view.
"It's obviously a very important period now, the end of the season, there's a lot of important games coming up, I'm only thinking about playing well just want to play as well as I can and the rest will sort itself out.
"In an ideal world you would like your future sorted out but it's not always an ideal world and you've got to get in with it. It doesn't help anyone by letting it affect you."
