Bonnyrigg v Hibs at Tynecastle, Albion Rovers v Celtic in Airdrie
The Scottish FA have confirmed venues for the Scottish Cup fourth-round ties between Bonnyrigg Rose and Hibernian and between Albion Rovers and Celtic.
Bonnyrigg v Hibs on Saturday 21 January (15:00) will take place at Hearts' Tynecastle Stadium in Edinburgh.
And Celtic's away tie against Albion Rovers on 22 January (15:00) will be played at Airdrie's Excelsior Stadium.
Raith Rovers v Hearts also takes place on 22 January (13:05) and will be shown live on BBC One Scotland.
Rangers v Motherwell on 21 January kicks off at 12:30, with the 13 other ties that day at 15:00.
BBC Radio Scotland will provide updates from the fourth-round ties and there will be highlights on Sportscene on 21 and 22 January.
Junior side Bonnyrigg usually play at New Dundas Park while League One Albion Rovers' regular home ground is Cliftonhill. Moving the ties involving those clubs will allow for bigger capacity.