Hahaha, sorry but I stopped reading when I saw you included Mendy for last season.
Well I'm writing from a planning stand point not about what ended up happening We went into last season with him there as a part of the squad, and Ake was a stand in out of necessity, so we're two LBs down.
Having a CB stand in at LB and then saying "oh it's fine that can be the standard now" would be going backwards.