And the Rams manager hopes to conclude his summer spending as soon as possible after the end of the current campaign.
Derby face Watford at Vicarage Road on Sunday in their final Championship fixture, after which a busy summer of ins and outs at Pride Park is expected.
"The players we want to bring in and the deals we want to do are all achievable in terms of sensible fees, those that command fees," said Clough.
"We are going to try and get them in place as soon as possible, we don't want it running on into July and August if possible.
"But it will depend on players' circumstances. Some of them are on free transfers and some are under contract with their clubs and that involves negotiation."
Clough would also like to have Aston Villa midfielder Barry Bannan back on loan at Pride Park next season.
The diminutive playmaker has impressed in his nine appearances for the Rams since his arrival in mid-March.
"Barry Bannan has done ever so well for us since coming in, but he will go back to Aston Villa because they want to keep him," said Clough.
"However, he is one we would certainly look at trying to get back for next season for a loan spell. He is a great lad to work with and most
importantly he is a good player."