I really hope we play a reserve team but I wouldn't put it past Wenger to throw Ozil or Sanchez out there.
We have a really big stretch coming up with Stoke, @Everton, @City within about a week of each other. We need our best players fully fit and very rested going into that sequence.
One decent idea is to have both Ozil and Sanchez on the bench. If at halftime it looks like Ludogorets has some chance to pull a real upset and get something in Paris and we aren't in command of our own match, then you put them on in the second half. If not, you just let the reserve squad see out the match.