I think Sarr went straight out on loan when he signed in the summer.
Not too sure about the rest but you would imagine that Bakayoko and Moses will be leaving permanently in the window.
Van Ginkel and Musonda should not still be at Chelsea. I was shocked to see Musonda's name to be honest. Thought he'd disappeared into some Chelsea youth abyss.
Drinkwater gave an interview a couple of weeks ago where he was basically pleading for someone to take a chance on him and made up a lot of excuses for his poor behaviour (headbutting a team mate, starting a fight in a nightclub etc).
One of them was that he didn't see much of his son as he had moved to London - in the next paragraph he's saying that he'd consider playing abroad for the sake of his career. Absolute shithouse.