Derry insists there is no ill-feeling from the longer-serving players at Loftus Road towards the new signings.
"Hand on heart I don't resent anyone at the football club for what they earn, I know there are guys there that earn an absolute bucket-load, more than I could ever dream of earning," he said.
"Honestly I don't resent them for earning that. What I do get upset about is if they don't work hard to earn that. You have got to work hard for your money regardless of whether you earn £10 a week or £100,000.
"If they are doing it then the whole team are doing well by it by when they don't put the effort in it really hurts."