McCoist admitted he was stunned by the lacklustre display he witnessed on and off the pitch, which highlights the crisis that the club is in.
"I just felt, coming into the stadium tonight, it kind of blew me away. It was nothing like a normal atmosphere of any game, never mind a European game, here at Ibrox," he added. "There was an apathy, there was no life about the place actually on or off the pitch, which is really, really concerning. Listen, the manager's in trouble, the manager's in big trouble because something has to change, and something has to change dramatically. On the current evidence, sadly, I can't see it happening."