Former Reading left back Nicky Shorey has signed until the end of the season.
He is Kevin Keen's third signing of the January transfer window, following the arrivals of Jake Keen from Norwich City and Elliot Lee from West Ham United; both on loan.
The 35-year-old has two England caps and 449 league appearances to his name, the majority while at Reading.
His most recent football has been at Pune City in the Indian Premier League and before that he spent a season-and-a-half at Portsmouth.