This will change drastically as form and injuries evolve over the next month, but this is how I see the roster should stand going into October. Order within the position isn't really thought out, more just who should be on the roster. Assuming best case scenarios, only Reyna's injury has been confirmed to keep him out through the next window:
First replacement: Tim Melia
First replacement: Give CCV a look
First replacement: Yedlin (Yedlin, Cannon and Moore are interchangeable, thought I'd give the other 2 a look here)
First replacement: Busio
First replacement: Gioacchini playing out wide
First replacement: Sargent
That'd make a 29 man roster. 6 players off from the last roster (Bello, Yedlin, Sands, Zimmerman, Sargent and injured Reyna) and 9 players are added. Of the ones who dropped off, Bello and Sands I think just aren't ready yet, Zimmerman is off because we don't need 6 CBs again, and Yedlin is rotated off so similar players get a chance. If Sargent finds his groove I'd take him over Pejok or Hoppe since he is one of our most talented strikers, but if he remains in a funk/injured I'd rather give others the opportunity.