Toulouse lock Trevor Brennan will face a European Rugby Cup disciplinary hearing on 26 February over his alleged assault on an Ulster fan.
Brennan clashed with fans while he was warming up
The former Ireland player was called before a hearing in Dublin on Friday but his representatives successfully appealed for a delay to procedings.
Fan Patrick Bamford is pursuing legal action in France against Brennan after being left needing medical treatment.
The accountant is also taking libel action against several media outlets.
Brennan had been warming up with the Toulouse substitutes when he claims he was verbally assaulted by a group of Ulster fans.
He then left the playing enclosure and became involved in an incident with Bamford, appearing to land a number of punches on him.
Brennan has since said he regretted the incident, which he claimed was provoked by taunts about his mother.
If found guilty, Brennan, who intends to retire at the end of the season, could receive a lengthy ban.