Harrison's manager Sam Ayoub confirmed that his client may be on the move despite having two years remaining on his Raiders contract.
''Bronson is looking at his options and he has a few,'' Ayoub said. ''I'm not going to comment on who the clubs are because it's not fair on them. He has as much chance of being at Canberra as he does of not.''
The Dragons hope a friendship developed almost a decade ago between Harrison and another likely recruit, English international Rangi Chase, holds the key to the pair joining the club. The Herald revealed last week that a conflict between managers had stalled Chase's return to St George Illawarra.
With significant salary cap space left heading into next season, the Dragons have targeted the pair, who played together at Wests Tigers, to bolster their squad before pre-season training resumes next month.