I would handle this in two phases. We need to work on this season, and streamline the rotation to build an identity. Then this summer we can wheel and deal
this season
Front 4: Aubameyang, Lacazette, Saka, Pépé, ESR, Odegaard, Willian, Martinelli
Middle 2: Partey, Xhaka, Elneny, Ceballos
Back 4: Tierney, Cedric, Luiz, Gabriel, Mari, Holding, Bellerin
Goalie: Leno, Ryan
That rotation of 21 leaves no space for Nelson, AMN, Nketiah and Balogun - all of whom should go on loan now.
Next season
Front 4: out: Lacazette, Nketiah, Nelson. In: striker / Odegaard.
Middle 2: out: Xhaka. In: Bissouma
Back 4: out Luiz, AMN. In: Saliba.
Use new kids as necessary from academy.