Oxford United have signed former Newcastle United and Wolves defender Mike Williamson on a one-year deal.
The 33-year-old was released by Wolves in May having made just six appearances last season in an injury-hit year.
His signing follows a brief trial period with The U's on their pre-season trip to Portugal earlier this month.
"It's an exciting place to be, a good club heading in the right direction," he told BBC Radio Oxford. "I want to play games and contribute."
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