Football Federation Australia have issued Gold Coast United with a material breach of the A-League's club participation agreement.
Bottom-placed team Gold Coast had 'Freedom of Speech' plastered across the front of their shirts and on signage at Skilled Park during their 1-1 draw with Melbourne Victory on Saturday, incurring the ire of Australian football's governing body.
The FFA released a statement in which the body said it had considered canceling Saturday's match because Gold Coast did not have permission to wear the slogan.
The FFA issued Gold Coast with a 5pm deadline to remove the message, which the club did not comply with.
Gold Coast chief executive Clive Mensink said immediately after the match he had not received correspondence from FFA, but confirmed the message was not football related.
"I don't know the content of the letter," he said.
"I don't know what the context or quotes … were so unfortunately I can't help you with anything tonight."
"We'll take it to the board and go from there."
Gold Coast owner Palmer has been at the centre of a storm of controversy in the past week, following the axing of former coach Miron Bleiberg and the decision to hand Mitch Cooper the captaincy on debut last week.
The billionaire is also suing hotel giants Hyatt, the parent company of United's usual shirt sponsor Hyatt Regency Coolum, for 60 million dollars.
Palmer alleges Hyatt have been siphoning funds from the golf resort for the past 'two decades'.
Signage at the Sunshine Coast hotel was blacked out or removed earlier in the week, but Hyatt won an injunction to remain in charge of the resort on Tuesday and a judge ordered the hoardings be replaced.
Mensink acknowledged there were 'issues' with the club's arrangement with Hyatt.
"Obviously there are issues with the sponsorship so that's a different issue altogether. Other than that I've really got nothing to say," he said.
Gold Coast caretaker coach Mulvey claimed he 'didn't even notice' the message on the front of his team's jerseys.
"Did we have different shirts on tonight?" he said.