It's a big one and you can't deny the confidence on display from the visitors.
Jens Berthel Askou genuinely believes that his eye-catching Motherwell team can land one on the chin of Celtic.
That kind of confidence is likely to have been emboldened by the Premiership champions' inability to hit the net.
No goals in the last two games and the many misses against Hibs was replaced by meek resistance against Braga.
Kelechi Iheanacho had a strike bizarrely ruled out on Thursday but that injustice cannot deny an uncomfortable truth about a side who have lost their bite.
Askou's entertainers were the draw kings until they defeated Aberdeen, now Motherwell will try to play their attacking brand of football at Celtic Park.
Is a forward-thinking opponent just the tonic for Celtic or will it only reinforce the weaknesses in a team who looked a level above only 12 months ago.
Celtic: Schmeichel, Ralston, Carter-Vickers, Scales, Saracchi, McGregor, Hatate, McCowan, Maeda, Tounekti, Iheanacho.
Motherwell: Ward, Koutroumbis, Gordon, McGinn, Longelo, Watt, Fadinger, Said, Charles-Cook, Maswanhise, Stamatelopoulos
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No goals in the last three but still it's Tounekti, Maeda and Iheanacho leading the line.
There was plenty to like against Hibs but another barren game won't cut it.
Motherwell: Ward, Koutroumbis, Gordon, McGinn, Longelo, Watt, Fadinger, Said, Charles-Cook, Maswanhise, Stamatelopoulos
Celtic: Schmeichel, Ralston, Carter-Vickers, Scales, Saracchi, McGregor, Hatate, McCowan, Maeda, Tounekti, Iheanacho.
The silence has been, er, silenced, but what will that mean today?
Askou's men ask a lot of questions and could you imagine if they controlled parts of the game?
Football
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Brendan Rodgers