They have adapted quickly to life back in the second tier and are seventh in the table and only out of the play-off places on goal difference going into Saturday's clash.
"Leicester have stepped up well from League One and you have seen the promotion boost and the confidence they came up with as well," said Clough. "It is pretty much the same side, with just two or three new faces, and they have great striking options as well.
"The last game they got a good 1-1 at Coventry. They were one down with 60-odd minutes gone and they were able to take three strikers off and put three fresh ones on. I am not quite sure what that feels like!
"It just shows the difference a fully-fit squad can make."