Grayson has made just two signings so far this summer as his side look to bounce back from their play-off heartbreak, but insists he will bide his time for the right deals.
He told the club's official website: "Whether we start with this group of players, we'll have to wait and see. I would expect one or two new ones to come in and probably one or two to go out as well.
"I could have quite easily have gone out and signed six dozen players if I wanted, but they wouldn't have been of the quality I think I need to bring in to the football club.
"We said last year that there isn't a great deal that needs to be changed around with the squad, and those changes that do need to be made will be made.
"There are lots of avenues we can go down. Free transfers, signing players for money, and the loan market of which I've made no secret about the fact that I am a fan. We'll also be looking at trialists. You have to use every avenue, but sometimes it can take just one move to trigger things off."