A 2-0 home loss to Brackley Town, means the Bluebirds exited the competition.
"It was awful, what it has done is make up my mind on a few things it was very very poor," Pennock told Radio Lonsdale
"We have a small squad, I wanted to give them an opportunity, over the next few days there will be some movement for sure."
Pennock made it clear that he wants to bring changes to the squad before a crucial game against Guiseley on Saturday.
"I want to take this football club places and I there are some players that won't be here for that.
"I hope to have some changes in for the Guiseley match."
Photo by Dave Chubb
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