Deila can't give Hoops fans success they crave
Not so long ago all it took was a league title win to satisfy Glasgow's demanding football fans, no matter what colour of scarf they wore.
How times have changed.
With Rangers off the scene as far as the Scottish Premiership is concerned, Celtic fans want it all. European runs and cup success are a must for them with their Old Firm neighbours a long way from being in the reckoning for silverware as they make their way back from the wilderness.
With Parkhead boss Ronny Deila being unable to deliver Champions League group stage qualification - let alone a last 16 spot that was the target for his predecessors - and failing to stay in the Europa League beyond Christmas, domestic dominance was seen as the least Hoops fans would be satisfied with this season.
Although the league title has been a one-horse race since the Gers were banished to the lowest tier after falling into administration, a Celtic treble is no longer a possibility after they were beaten by Ross County in the League Cup semi-final on Sunday.
The angst of the fans isn't, however, as tangible as it might be. They are no more satisfied at watching their team trot to the title as their Rangers rivals are at seeing them rule the roost.
They want more, they aren't getting it, but the muted jeers seem to be merely a token gesture - which should be a major concern for the hierarchy.
The product on the pitch, with the squad shorn of the world class quality that the likes of Henrik Larsson used to provide, has failed to inspire those on the terraces.
Now they need an inspirational manager and with Deila a dead man walking, the fans will hope to get one.