Errrr, at least one right back and a centre half.
We have 2 injury prone centres in Stones & Ake, no back up LB and no RB at all.
So defensively we have Dias(badly out of form), Khusanov(injured), Guardiol(injured), Stones(now injured), Ait-Nouri(pulled out of internationals) and Wilson-Esbrand...