Well red, in architectural terms (if you prefer that idiom/metaphor) I’ve seen many a lean-to that killed the architectural integrity of a building stone dead, and that’s what’s on offer here, a cheapie lean-to, so to speak, that’ll add little and look awful.
Just as amputating the wrong limb won’t cure the patient, and best not done, so too will building the wrong adjunct not cure what’s wrong with Anfield, and best not done.