Rangers boss Ally McCoist is playing youngster Scott Gallacher as he waits for summer signing Cammy Bell to become available and could then add Simonsen with the view to sending the former out on loan.
"In an ideal world, we'd put Gall out on loan so that he's playing every week and we could bring another goalkeeper in to compete for the number one spot,” he said.
"Steve has come in and we're very thankful to him for doing that. We can have a look at him and he can have a look at our place as well. We'll see where that takes us.
"Nothing's set in stone at the moment. I've not seen him in training yet but I saw him in the gymnasium just there and he looks like he has been looking after himself.
"I don't think his fitness will be a problem and we've obviously spoken to one or two people about him who recommended him highly.
"Steve has been training here and there and I think he has had one or two other offers from other places which he has had to weigh up. The bottom line is there's no immediate rush for us to do anything because of the situation we're in at the moment."