I think who plays 10 and who plays CB will be the interesting ones next season. If Santiago is loaned/sold then imagine Moore plays LW and maybe Donley loaned/kept with first team so attacking mid will possibly be free. Kyerematen could play 10 if Leo Black plays full back and Hall and Abbott are holding but not sure if I can see that. Maybe Hall could play 10, maybe Olusesi moves up to u21s, maybe Ajayi plays there but I think he could start either up top or on the right, depending on who's loaned out.
CB: Dorrington hopefully loaned out if he can get fully fit and probably Baptiste comes up from u18s and then King/Abbott or Ashcroft/Dante next to him if one is kept around.
Could obviously be a new player or two that come in as well. Lot of moving pieces. Sorry this is a bit of a ramble... I tried doing a potential lineup for next season but it had I think 7 of the 11 that started the PL2 final moving on or being loaned and not sure if that's really realistic.