Perth Glory goalkeeper Danny Vukovic seems certain to be sanctioned for his reaction on social media to teammate Josh Risdon's sending off in the team's 1-0 loss to Melbourne Victory at nib Stadium on Saturday night.
Vukovic took to Twitter after seeing a replay of the incident that led to referee Regis Queffelec showing Risdon a second yellow card.
The young right-back was booked twice in the space of 20 minutes in the second half and given his marching orders.
Vukovic demanded action from A-League chief executive Damien de Bohun over the performance of referees in the competition, which the goalkeeper had clearly been unhappy with.
Glory have felt aggrieved over several yellow cards handed to them this season and Vukovic said the situation was "getting beyond a joke" after the decision-making of Queffelec on Saturday night.
"Just saw rizzo's 2nd yellow. Absolute joke," Vukovic posted.
"@DamiendeBohun sort your refs out mate. Getting beyond a joke."
Vukovic later deleted the tweet, but his comments are likely to be considered a breach of the players' code of conduct when A-League officials meet today to review the weekend's incidents.
Glory captain Jacob Burns hoped Risdon's automatic one-match suspension for being sent off would be lifted, but an A-League spokesman confirmed yellow cards could not be overturned by the match review panel.
"I was close to the situation and I really thought that the linesman actually flagged for their tackle, for Leigh Broxham's challenge on Rizzo," Burns said.
"I don't think the referee read it that way but I did question that.
"It's something to be looked at and hopefully we can put it to the review panel and it can be overturned."
Key playmaker Liam Miller will also miss Saturday's game against Brisbane Roar at nib Stadium after incurring an automatic one-match suspension for accumulating five yellow cards this season.
Miller's ban could open the door for young midfielder Brandon O'Neill, though coach Ian Ferguson is more likely to promote the experienced Nick Ward to the starting line-up.
Ferguson could again be forced to pick a makeshift back line for the Brisbane game, with first-choice central defensive pairing Bas van den Brink and Michael Thwaite in doubt with calf injuries.
Van den Brink suffered tightness against Melbourne and had to be substituted, while Socceroos defender Thwaite is yet to return to full training after tearing his right calf last month.
Glory's loss to Melbourne was their eighth in 17 games this season, all by a single goal.
The result put Glory out of the top six for the second time this season, but just five points separate fifth from last on a congested table.
"Just saw rizzo's 2nd yellow. Absolute joke. @DamiendeBohun sort your refs out mate ..." "Tweet from Glory goalkeeper *Danny Vukovic *