The Teessiders have picked up just one point from their last five games, with Warnock admitting there are some players who want to leave the club.
With four games remaining, the Boro boss will therefore be assessing his squad as he looks at the areas he needs to strengthen for the 2021/22 campaign.
Warnock’s former side Rotherham are in desperate need of points as they look to avoid relegation from the Championship.
The Millers are four points from safety with six games left to play after losing their last two games against Coventry and Birmingham.
Paul Warne’s side shouldn’t be taken lightly, though, after beating Boro 3-0 at the Riverside earlier in the season.
Here’s the Boro side we think could start against Rotherham.
5. LB: Marc Bola
Saw an early shot saved against QPR and produced another solid display. Doesn't have much competition at left-back. Photo: Alex Burstow
6. CM: Jonny Howson
Performances have dropped off slightly in recent weeks yet he remains one of the first names on the team sheet. Photo: Stu Forster
7. CM: George Saville
Saw a couple of efforts saved against QPR and will be hoping to prove himself in the final few weeks of the season. Photo: Stu Forster
8. RW: Yannick Bolasie
Was Boro's biggest attacking threat against QPR and got on the scoresheet despite missing some good chances. Photo: Stu Forster