Out of the current starting 11 it's Norwood whose place is most under threat for me, I could see Lunny dropping in there allowing Freeman to come in and the midfield 3 to play slightly more advanced than they do at the moment.
Besic can count himself unlucky but he's the type of player that will grasp his chance when it comes, (suspension, injury) and whoever he replaces could find themselves struggling to win their shirt back.
CW will have his January targets already lined up and depending who they are there will be some who start missing out on the match day squad altogether, (Billy, Robbo and maybe Jags if we strengthen at the back, which we need to do). Then there's Ravel, if CW and the coaches are working hard with them like they have been with Moose he could yet force his way into the reckoning.