Celtic have spoken of their "amazement" after they failed with an appeal to have Scott Brown's Old Firm red card rescinded.
The 24-year-old midfielder was dismissed after clashing with Gers striker Kyle Lafferty during last weekend's 1-0 defeat at Ibrox.
The Hoops were reported to be critical of the standard of refereeing in the Scottish Premier League this season in the build-up to the pivotal match and the latest decision has led to a strong rebuke from the Parkhead club.
The red card meant Brown was given an automatic one-match ban but, as he also reached a disciplinary points threshold, the Celtic skipper will also miss two additional games.
In a statement on their official website, a Celtic spokesperson said:"We are amazed at this decision and believe it is the wrong one.
"Given the general consensus that the initial decision was incorrect and the availability of supporting video evidence, at the very least, the incident should have been referred to a separate review panel.
"Naturally, we are very disappointed that this simple opportunity was not taken.
"Clearly, it is also very disappointing that Scottish Football Association rules do not permit this decision to be appealed."