If we assume that both Lo Celso and Ndombele make our first eleven, who misses out? I'm all for squad depth, but we're going to be in quite a new position (if this goes ahead) of having big name players on the bench. All the best teams have this, but there's always the risk that someone gets upset.
If we stick with a 4-2-3-1 then the 2 is between Sissoko, Ndombele, Dier, Wanyama and Winks (plus potentially Lo Celso). In the 3 we'd then have Lo Celso, Eriksen, Dele, Son, Lamela, Lucas. I'm intrigued to see what system we play and who misses out when everyone is fit.
It's also curious that we apparently see Lo Celso as a priority over and above a RB for instance. Poch is either happy with his RB options, sees Lo Celso as too good an opportunity to turn down, or really saw CM and AM as areas we needed to significantly strengthen.
I think we need to move beyond having a first eleven and think along the lines of having a first 18 or even just a first team squad if that makes sense. You tailor the team according to who youre playing against etc... so against the Burnleys then you play everyone with an ounce of creativity...
I just generally think the first eleven no longer exists but perhaps its an idealistic way of looking at things