The 36-year-old, who is a free agent after being released by Notts County at the end of last season.
He told Sky Sports: “I'm doing bits and bobs.
“I made a decision with the family that I wanted to be closer to Newcastle, which obviously limits the clubs you can look for.
“I've kept myself fit and I haven't retired officially. It would have to be the right club. It's not something I'm actively pursuing but if something came up I'd definitely be ready."
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