i think that most everyone here has missed a big point in the plot here either that or forgoten it. First off naruto was sent off on a mission to retrive sasuke. That would mean that kakashi would be trying to do the same and also he would be worried and try to prevent them from killing each other. With that said the most natural thing to expect would that naruto would welcome kakashi showing up and would probally try to get him to hep him. I dont see naruto attacking kakashi at all and at most kakashi will try to interfer with the fight until he can establish the fact of his presense at which point i would expect him to work with naruto in trying to get sasuke back. But even at that i think there will be interfercene on sasuke's behalf as well and that is where i believe that kakashi will come in.