McClaren has admitted that while he is happy with his squad, he is open to making further additions.
"We are always looking to improve. I am pleased with what I have got but maybe one or two little additions will help us," the Burton Mail quotes him as saying.
"If it is what we want and costs money, we will go begging to the board again! And if it is a loan, we will also be begging!
"For now, we are going to concentrate on this squad in Austria where we have two games. We'll see how we come out of that and move on from there."
Derby were reportedly interested in signing Lukas Jutkiewicz, who has joined Burnley from Middlesbrough.