Well, for better or worse, he's got his chance now. Hopefully he'll grasp it with both hands and put in excellent performances against Watford, Millwall and West Ham (I'm assuming Mills will receive a three-match ban?)
As a side note, surely it's better to have SSL on the bench instead of Pantsil? SSL can play CB and RB, so if Pelts or Mills/Bamba have to be subbed for any reason, he can fill in at both positions, but yesterday we had to move Peltier to CB to accommodate Pantsil... he looked alright there, but we were missing that aerial presence that Mills provides. I would have been happier seeing SSL come on when Mills was sent off tbh.