Rangers and Celtic have appealed against SFA sanctions ordering both clubs to play their next home Scottish Cup ties behind closed doors.
The Glasgow giants are also challenging fines of £100,000 levelled on both clubs after fans clashed on the pitch at the end of last season’s quarter-final at Ibrox.
Warned that they could be forced play a second home match without supporters in the event of further unacceptable conduct Celtic released a statement citing a ‘disproportionate punishment’ while Rangers vowed to ‘consider the outcome in full.’
Both clubs have now launched a disciplinary challenge with the appeal hearings due to take place on Monday October 26.
Events spilled over after Celtic advanced to last season’s semi-final by winning a penalty shoot-out at Ibrox on March 8.
Visiting fans spilled on to the pitch in celebration, with a number of Rangers supporters crossing the halfway line to confront them.
Police Scotland have made 43 arrests after fans clashed and officers and stewards were injured. Objects and pyrotechnics were also thrown with an independent review commissioned by the Scottish FA finding that a "crushing incident was a real and foreseeable risk" due to "non-compliant Ultra group fans surging past police and stewards".
At the time of the SFA sanction Celtic said: "We are shocked by this disproportionate punishment for a relatively small incursion by Celtic supporters at a moment of emotion and celebration.
"Our club has never defended supporters entering the field of play and we have repeatedly taken action when it occurs.
"However, we understand the part emotion plays in football and would have expected the context and distinction in behaviours to have been taken into account by the panel.
"Another important distinction is that, on this occasion, Celtic were not the home club, responsible for stadium safety arrangements.
"We will study the panel's report and reasoning when it is available and will thereafter consider our next steps."
Rangers said: "We note the decision of the Scottish FA tribunal published today and will now consider the outcome in full, including its implications, before determining any further steps."
