At present:
Defense: Valencia, Darmian, Smalling, Jones, Bailly, Rojo, Shaw, CBJ
Midfield: Carrick, Schweinsteiger, Blind, Schneiderlin, Herrera, Fellaini, (Pogba), Pereira
Attack: Zlatan, Mkhitaryan, Martial, Rashford, Rooney, Mata, Lingard, Young, Januzaj, Depay, Keane
Seems fine number wise. Lacks in quality depth.
Once Pogba is done, I would look to move out: Rojo, Schweinsteiger, Blind, Fellaini, Depay, Young, Mata, Keane & Januzaj (On loan). Will add a young heir to Carrick, an experienced CB & a young right winger with potential.
Defense: Valencia, Darmian, Smalling, Jones, Bailly, Shaw, CBJ, CB
Midfield: Carrick, Schneiderlin, Herrera, Pogba, Pereira, Rebuen Neves
Attack: Zlatan, Mkhitaryan, Martial, Rashford, Rooney, RW, Lingard
Aided by the like of Tofu, Tuanzebe, etc.
De Gea
Darmian/Valencia Smalling/Bailly New CB/Jones Shaw/CBJ
Carrick/Neves
Schneiderlin/Herrera Pogba/Pereira
Mkhi/RW Zlatan/Rashford/Rooney Martial/Lingard
Don't think it'll be possible to make all those changes in this window, but that is how I like to squad to shape up.