Chelsea have had their transfer ban halved by CAS, meaning they're now free to sign players in January. It'll be interesting to see what sort of business they do having raised a fair amount of money in the summer.
Not sure they will do much at all. They are doing pretty well, aren't going to do any better come the end of the season and prices will be inflated as well as there being a lack of top class available players. I reckon they will hold tight until the summer and see where they are.