Odsonne Edouard a penalty - but admits it's "not impossible" to award spot-kicks for no-contact incidents. The Frenchman went to ground under the challenge of Rangers full-back Borna Barisic but it was hard to tell if the Croatian touched the striker with his lunge in the area as Collum showed a yellow card for simulation instead.
With Celtic leading 1-0 at the time, the decision was compounded by Alfredo Morelos' equaliser shortly after. And while Gallagher sided with the SFA official in his verdict, he didn't roundly criticise the attacker who some observers believe was just trying to make sure he wasn't injured by the challenge.
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