Boro brought in goalkeeper Jordan Archer, Darnell Fisher, Yannick Bolasie, Nathaniel Mendez-Laing and Neeskens Kebano to bolster their squad as they push for a play-off place in the Championship.
The Teessiders have also welcomed back defender Grant Hall and striker Ashley Fletcher from injury – so who will start when everyone is fit and available?
Obviously there will be more injury setbacks before the end of the campaign, and Warnock will choose to alter his side and formation depending on the identity of the opposition.
Still, we’ve put together what we think could be Boro’s strongest starting XI, and substitutes bench, when everyone is fit.
Scroll down and flick through the pages of our picture gallery to see if you agree:
Obviously there will be more injury setbacks before the end of the campaign, and Warnock will choose to alter his side and formation depending on the identity of the opposition.