He was talking to BBC Wales.
"It's going to be slow rebuilding, we haven't got millions of pounds to spend.
"Some of the players are not good enough to do what I want them to do and will leave, that's just football.
"Some players under contract will go on the transfer list because we have to move some out to bring others in.
"We'll go away for a week, then the rest of the close-season has been planned.
"When the players come back, I will explain everything to those who are staying and to those who are going.
"Hopefully we'll find the right ones to come in - people who want to come in to this club.
"When you haven't got the right facilities, you've got to sell the dream.
"We've been able to do that on most occasions and we'll have to continue to do that for the next 18 months." We've come up a long way short, but the players - many of them youngsters - have performed above a lot of people's expectations," he said.
"Some of the criticism is justified, but a lot of the players are good enough - they just weren't ready to take the next step.
"We're building but people want it now. We can't do that because we haven't got the resources or the funds.
"But I'd rather look at it like we weren't ready to go up. It's been a good season in certain parts, with disappointment at the death.
"Hopefully we'll learn from this year and get stronger.
"I'm hurting very deeply and I won't let that feeling go," he continued.
"You've got to get over the disappointments, but you've also got to keep them as a reminder that you don't want it to happen again.
"I'll be hurting until I'm out of this division. It will happen for this club, I'm sure of that. Whether it will be in my time I don't know, but it will happen."