With the Rams currently occupying 11th position in the Championship table, Clough has already switched his focus to the 2013-2014 campaign.
He told the Derby Telegraph: "I think half a dozen signings is the target we have come up with and they are pretty much set in our mind.
"But there will be some going out. It will not be a case of just adding six to the squad. A few will be going, but hopefully not the important ones.
"The recruitment process has been stepped up since Saturday. We are talking to some players who we would like to bring in. We have started to talk to one or two who will be out of contract, and we are getting a positive response."
Derby have two league matches remaining.