Warnock has named a handful of players who will feature in the second-round tie, while new Boro signing Sam Morsy is set to make his debut after arriving from Wigan.
Our Boro writer Joe Nicholson has picked the side he thinks will start against the Tykes – scroll down and flick though our picture gallery to see if you agree:
1. GK: Aynsley Pears
Has started Boro's last 16 league games but could face competition following the arrival of Dejan Stojanovic. Photo: George Wood
2. RWB: Djed Spence
Was recalled to the starting XI against Luton. Will be hoping to rediscover his best form. Photo: Justin Setterfield
3. CB: Jonny Howson
Returned to centre-back against Luton. Wasn't his best display but it's a position he's performed well in this season. Photo: Alex Livesey
4. CB: Harold Moukoudi
Has shown flashes of potential in his three Boro appearances. Still adjusting to his new side though. Photo: John Walton