Charlie Nicholas has slated Rangers' decision to write to the SFA regarding Alfredo Morelos' disallowed goal against Celtic at the weekend.

The Gers striker had the ball in the net from a corner but referee Kevin Clancy controversially judged that the Colombian had fouled Hoops right-back Alistair Johnston when it looked like both players were tangling with each other.

Nicholas can see why Rangers are furious with the call, but he insists the club should have reacted differently.

He wrote in the Daily Express: "Rangers have written to the SFA to complain about Alfredo Morelos’s goal being chalked off against Celtic. If the Light Blues really want to make a real point then they should be concentrating all their efforts in trying to win the SFA’s flagship event - the Scottish Cup.

"Celtic face Rangers again at Hampden later this month in the semi-final. It is the final chance for Michael Beale’s side to end the season with silverware.

"Yes, I understand why Rangers have grievances from the weekend. I agree Morelos’ goal should have stood and Kevin Clancy shouldn’t have ruled his effort out at Celtic Park. Maybe if the goal had stood then Celtic might not have won but the score-line is out there now. That won’t change.

"You can write to the Scottish Football Association but what is it going to achieve? Just to tell officials or the VAR officials they got the decision wrong? It will achieve absolutely zero. The bottom line is that Rangers still can’t beat Celtic. If you go and beat them at Hampden then you don’t need to write letters to the SFA.

"The perfect response would be to beat Celtic because yet again, their rivals have not played well and won again. The strikers were the difference. Morelos had two big chances in the second half but he didn’t take them. Kyogo Furuhashi took his."

Police have been called in after referee Kevin Clancy received “threatening and abusive” messages in the wake of Saturday’s clash.

The SFA revealed on Monday that it had “referred a significant volume of threatening and abusive emails to Police Scotland after personal and professional contact details” of Clancy were published online following the game.

A statement added: “The association’s security and integrity manager has been liaising with Kevin and Police Scotland following a series of unacceptable messages being sent via email and phone over the holiday weekend.

“We offer our full support to Kevin and reiterate our wider support to the referee community.”