"I'm only 25 and so is Allan. So I expect the manager to bring in an experienced goalie. But I genuinely believe I can eventually challenge Allan for the No.1 spot.
"It would be special to run out at Ibrox in a Rangers jersey. It has been hard to get a game because Greegs has been in such brilliant form.
"But if Roy goes it's a great chance for me to progress and be viewed as second-choice keeper at the club."