The 31-year-old caused surprise when he announced a move to Evo-Stik League South Shields last night.
But being from the town, the Quakers man explained why it was something he just had to do.
Shields paid a fee to prise the midfielder from Darlo after three years of service to the National League North club, and with Turnbull having a year to run on his contract.
“To sign for my hometown club is a dream, and I’m absolutely delighted to be here. Special things are happening at this club and I want to be involved and be a part of that,” he told the Gazette.
“Being from Shields, I’ve always followed the club, and playing for them is something I’ve always wanted to do. I’m absolutely delighted that it has happened.
“I’m excited. I’ve got that passion again and a new goal.
“There will be lots of people in the crowd that I know, and I want them to walk away saying ‘he’s a good player and they’ve made the right decision to bring him in’.
“I’ll have lots of family and friends here every game. There will be that motivation there and personal pride, and I can’t wait.
“It’s a special place and my hometown club, which everyone dreams of playing for. It’s ideal for me.”