The Glasgow club say they are “surprised” by the charge over Brown’s comments and will “continue to challenge any action we consider to be unfair or disproportionate”.

The SFA rule states: “A club or recognised football body which publishes, distributes, issues, sells or authorises a third party to publish, distribute, issue or sell a match programme or any other publication or audio/visual material of any description in any media now existing or hereinafter invented, including but not limited to the Internet, social networking or micro-blogging sites, shall ensure that any such publications or audio/visual material does not contain any criticism of any match official calculated to indicate bias or incompetence on the part of such match official or to impinge upon his character.”

Rangers note that four out of five members of the SFA’s Key Match Incident Panel deemed the decision to be incorrect, adding that they have “serious concerns about the Scottish FA’s selective enforcement and inconsistency”.

“That finding helps explain the nature of a spontaneous emotional comment, delivered during a highly charged moment and immediately challenged live on air,” Rangers add.

“We have highlighted multiple examples of similar or stronger remarks made elsewhere in Scottish football that have led to no charges or sanctions.

“While we remain committed to maintaining high standards, we will continue to challenge any action we consider to be unfair or disproportionate.”