The football world is holding its breath for the first Old Firm Derby since February 2015.
With Rangers having had to work their way back up from the lower leagues, cup competitions have provided the only opportunity for the pair to play out their fierce rivalry.
And Sunday’s meeting is a big one, with a place in the Scottish Cup final at stake.
To make sure you don’t miss a kick, we have everything you need to know right here.
The match kicks off at Hampden Park at 12:00pm.
It will be broadcast on Sky Sports 2, with pre-match build-up beginning at 11:00am.
Rangers, despite having secured the Championship title with several games to spare, remain underdogs against their Old Firm rivals.
Scottish champions-elect Celtic are odds-on with most bookmakers, while you can get 4/1 on a Rangers victory.
Rangers and Celtic last met in February 2015, in the semi-finals of the Scottish League Cup.
Goals from Leigh Griffiths and Kris Commons gave the Bhoys a 2-0 win, with both goals coming in the first half.
Commons and Griffiths are both likely to feature in Ronny Deila’s matchday squad, though Rangers boss Mark Warburton will be without injured top scorer Martyn Waghorn.
