Yes, once they put him on the LTI list. Teams are unable to trial anybody as that deadline has been reached. The Swans only brought in players for a physical/medical, they couldn't trial them.
Edit: Gold Coast, Carlton, GWS, Melbourne and Hawthorn all have a position on their list available to add a player by March 15. So, Gold Coast could add two now. If they opt not to fill them before March 15, they can carry over a selection to the mid-season draft.