I think Takai has caused a real issue with this plantar fasciitis. We've had no way of evaluating him as a bridge to Dragusin's return. And that condition could also clear up tomorrow, or take a year to settle down.
I'm not particularly a fan of Ake. Especially so soon after watching Richy and Kudus run rings around him! A loan might not be the worst, but I'd stick with Davies for now and focus on scouting a specialist LB for January.
I've never really seen Williams-Barnett, other than a few clips. 16 is very young though, and he's not especially big (Moore in contrast always had a bit of bulk). If anything I can see Frank keeping a tight 25 man squad, with little bleed from the academy. We've loaned out all our best U21 (11 so far). All that remain around the fringes are: Takai (TBC), Vuskovic (TBC), Gunter (to loan?), Craig (to sell), Scarlett (to sell or loan), Byfield (very young), Olusesi (maybe a year bossing the U21s will suit him at the moment?) and Williams-Barnett (very young)