It's a top-of-the-table clash at Pittodrie, with the defending champions not getting things so easy in the Scottish Premiership this season
With a quarter of the Premiership season gone, Celtic have not had things their own way and find themselves locked at the summit of the table with Aberdeen.
The pair are six points clear of third-placed Rangers and Wednesday’s match promises to be a watershed affair.
Win and Brendan Rodgers’ side will feel that they will be in control of the title race but if they were to be upset by the Dons, suddenly there would be a real prospect of a challenge.