He's poor enough on the ball as it is, but playing him as the right-sided centre back meant we had no hope whatsoever of playing it out from the back. Sheffield United could just leave him be, and all he could do was either give it away, or pass it to Mings, who was then pressed and had to lump it.
I'm not a big fan of Konsa (or Elmo), but if Engels/Guilbert aren't fit for Chelsea, I want Konsa CB and Elmo RB.