|Scottish Premiership: Celtic v Rangers|
|Venue: Celtic Park, Glasgow Date: Sunday, 29 December Kick-off: 12:30 GMT|
|Coverage: Listen live on BBC Radio Scotland and follow live text commentary on the BBC Sport Scotland website and app.|
Rangers and Celtic go head-to-head in a crucial fixture at the top of the Scottish Premiership table, but who would you pick in a combined Old Firm XI?
Would you go for Celtic's Callum McGregor or Ryan Jack of Rangers? Or perhaps you'd choose both? Make and share your choices here...