Here is a look at how the two teams line up at Elland Road:
Leeds United: Silvestri, Wootton, Bamba, Cooper, Taylor, Byram, Adeyemi, Bridcutt, Murphy, Dallas, Wood
Subs: Peacock-Farrell, Coyle, Bellusci, Phillips, Cook, Doukara, Antenucci
Derby County: Grant; Christie, Keogh, Shackell, Warnock; Hendrick, Johnson, Butterfield; Russell, Bent, Weimann
Subs: Mitchell, Baird, Martin, Ince, Hanson, Shotton, Thorne
Leeds United are looking to end 2015 on a high note by going through December unbeaten.
It would be the opposite of 2014 where they failed to win a game in the calendar year's final month, which ended with a 2-0 defeat to Derby.
That game at the iPro was one of the worst performances of Neil Redfearn's tenure, but this time Leeds hope home advantage will work in their favour.
They have already beaten Derby once this season, thanks to an impressive Chris Wood winner, but the Rams are a much improved side since the two teams last met.
Currently they are second in the Championship table, while Leeds are in 14th place.