Depth is certainly an issue.
Whether
--------Ibrahimovic ----------
Martial - Mkhitaryan - Rashford
can function will be crucial for United. Behind that I guess
---------Blind Pogba -----------
Shaw - Bailly - Smalling - Darmian
-------------DDG --------------
That´s a pretty strong 1st team, but the bench is underwhelming. That´s why Dortmund dominated the game. Their bench is much stronger.
I see it more as
----------------Ibrahimovic----------------
Martial--------------------------Mkhitaryan
-------------------Pogba-----------------
----------Herrera------Schneiderlin-----
Shaw-----Smalling-----Bailly---------TFM
------------------DDG--------------------------
Alternatively
-----------------Ibrahimovic------------------
Martial---------------------------Mkhitaryan
-------------Pogba------Rooney-------------
-------------------Carrick--------------------
Shaw------Smalling----Bailly--------TFM
-------------------DDG-----------------------
I think that:
-the most used subs upfront will be Rashford, Lingard and Mata
-in midfield Pereira will be often used and we will see alot of variation as there are many alternatives and Jose hasn't made his mind up yet
-Bailly will be the key man at the back and will be his prefered RCB, the LCB partner will vary but I think Smalling will get to play most in that role
-We will not see much of Darmian because he is in fact terrible at actual defending and Jose will sniff that out and keep him out of the team, I think TFM or Valencia will be his preferred RB
I pray to the gods Jones will be sold before the end of the summer