The Light Blues have challenged Bobby Madden’s decision to send their Colombian striker off, along with Aberdeen’s Scott McKenna, in Wednesday’s 4-2 Pittodrie win.
The front man faces a two-match ban at today’s Hampden hearing unless he and Rangers convince a panel that he shouldn’t have been sent packing.
If Rangers fail with their bid then Morelos will miss tomorrow’s Scottish Cup tie with Kilmarnock and the home league clash with St Johnstone.
Morelos has been ordered off three times this season against Aberdeen, although his red card in the opening day at Pittodrie was rescinded.
Aberdeen have decided not to appeal McKenna’s red card.
It means the Scotland defender will be suspended for Sunday’s cup game with Queen of the South and the league match with St Mirren.
SFA compliance officer Clare Whyte will view video footage of Wednesday’s games before deciding whether to issue any notices of complaint.
Rangers keeper Allan McGregor was in the spotlight for catching Lewis Ferguson high with his studs in a challenge, while Celtic defender Jozo Simunovic’s clash with Hibs’ Oli Shaw is also likely to be reviewed.
As for Morelos, former Rangers manager Mark Warburton has urged the striker to lean from he experienced head of Jermain Defoe.
“Morelos just looks angry all of the time on the pitch,” he said.
“You’re watching and thinking it would be nice to see him enjoying his football a bit more, but you don’t know his background.
“I just see a real talent and someone like Defoe will be a great mentor for him, someone who’s played at the highest level can be good for him.
“The penny can drop with young players. If they’ve got an angry side and the red mist comes down, you can work with them.
“It’s harder when they are older. It’s too ingrained and in their blood.
“It’s the same in life. If you work on a building site or are a cab driver, if you are angry at 27, you’ll always be angry.
“The younger ones adapt if they can see what’s on offer and a path with riches at the end of it. He is what he is. You need that edge in your team sometimes. I look at Morelos and see a really talented centre-forward.
“People describe it as baggage but it’s a question of whether that temperament can survive in the EPL or La Liga.
“I’m not sure, but as a manager you sometimes have to accept it.
“Alfredo is 22, a kid, he’s a baby.
“And he’s hitting the headlines for the right reasons and also the wrong reasons.
“But most importantly for me, Rangers have got a very, very talented player who I hope will learn from Jermain and of course from Steven.”