Players I think are likely to start given the presser and traveling squad:
de Gea - If he isn't starting, I'm not sure why he'd go. Same with Valencia, if he travels he's almost guaranteed to start. Romero's chance will be the CSKA game where de Gea will probably be left out of the squad entirely.
Smalling - Did the presser and Bailly & Jones are both out and thus haven't traveled. Not quite sure how ready Rojo is, but you have to assume it's a similar level to Ibrahimovic wherein he's probably only going to play half an hour at best? I know he played 45 minutes in the reserves so there is a chance he starts though. However, with the shakiness of Lindelof and fitness of Rojo, Smalling has to play (again, he's another who will probably miss the final group game).
Matic - I don't think he'll be rested just yet, Jose will want to be hard to beat here and provide the best protection to either Lindelof or Rojo.
Lukaku - Ibrahimovic not ready to start, it'll probably be one of Rashford / Martial on the left. Romelu got his goal after a dry spell, hopefully we can keep him scoring.
That's probably our current best 'spine'. Best goalkeeper, and our biggest, most powerful, most fit and in form players in the other respective positions down the centre of the team. Go with that and then fill in the rest of the gaps with players more akin to squad players. I think that's the way Jose is likely to go tonight.
The rest, I'm not quite as sure. Young or Darmian at RB? Blind, Shaw, or Rojo at LB? Fellaini or Herrea? Or Both? A lot of that depends on whether it is three in midfield or three at the back, as I really think it will be one of those and not a 4231 of some kind with a proper no.10.
I think both of these are likely:
de Gea
Lindelof Smalling Rojo
Young Herrera Matic Shaw
Mkhitaryan
Lukaku Rashford
de Gea
Darmian Smalling Lindelof Blind
Herrera Matic Fellaini
Lingard Lukaku Martial
Probably gonna roll with one of these as my line-up picks, coin flip time...