Suffolk, I think you'll find that Hanley and Gibson were the first choice pairing at the start of the EPL campaign. Then we switched to a back three of Kabak, Hanley and Gibson. Omo only made two appearances during that early period. He replaced Gibson when the latter was suspended for one game after his double booking against Chelsea, and he played in the win against Brentford, but in a back four, paired with Gibson, not in place of Gibson. Going by that season's Wiki, he only made two other starts, plus one appearance as a sub, before the back injury put him out for the rest of the season.
I think we all hoped that last season would be his break through season. I can remember posting, with an eye on the future, that he and (the left-footed) Gibson should be our first choice pairing ..........