Rhys O'Keeffe is recovering from a serious bout of white staph infection, believed to have developed after he underwent an operation on his left heel in late 2011.
O'Keeffe has only managed just three AFL games in four-and-a-half injury plagued seasons with the Blues.
"I've played at AFL level and I've never felt out of place. I know I can do it. It's just a matter of finally getting that little bit of luck and continuity," O'Keeffe said.