The Canaries were relegated to the second tier of English football after losing six of their last seven games of the 2013-14 campaign.
He told the Pink Un: "I did that with all of them at the end of last season when I didn't know if I was going to get the permanent position or not. I felt even then you had to have a contingency plan.
"The players have let me know whether they want to be here or not, and that will remain confidential, but in terms of a clean slate, everyone has an opportunity to impress."
Norwich face Wolverhampton Wanderers in their Championship opener on August 10.