I think i mentioned this in India vs New Zealand thread as well that CSK are likely to go for Corey Anderson because of Dhoni's love for the all-rounders in his team. Anderson will be an ideal replacement for someone like Albie Morkel because he can hit them big and also adds variety to the bowling attack with left arm medium. I am also pretty sure that they will try to get M. Hussey back via RTM card because he has been one of the best players for CSK.