The 24-year-old made 12 appearances for the Cobblers last season after signing for the club for an undisclosed fee during the January transfer window, having made 150 appearances for Dale.
The Manchester-born defender, relegated to League Two during a tough few months with the Cobblers, moved to Blackpool in time for the start of pre-season training this week.
And Bunney can’t wait to make a fresh start closer to home.
He said: “I wanted to come back to the north-west. I don’t think living away was really for me.
“I struggled moving away, so coming back to the north-west is a good move for me if I can get settled here back in League One.
“I’ve been speaking to the manager for the last two or three weeks, so I’m delighted to finally get it over the line. I can’t wait to get going now.
“The manager was really good with me. He showed an interest in me and as soon as I heard they were interested I was all over coming here.”
On the books of Lancaster City as a youngster, Bunney started his career as a striker but has flourished as an attacking left-back since 2016.
Bunney has also spent spells with non-league sides Kendal Town and Northwich Victoria. “I like to get forward and get as many assists as I can, as well as help out the team as much as I can defensively,” he added.
“But I’m here to create goals and see how far we can get up the table.
“It’s a clean slate with all the lads back in pre-season training, so hopefully we can hit the ground running and take this club back where it should be.
“I’ve played against a couple of the lads quite a few times, plus I know a few through mutual friends.
“John O’Sullivan and Ollie Turton I know, but I’m sure I’ll get on with everyone else.”