Middlesbrough have completed their third signing of the summer with defender Frazer Richardson joining the club.
The versatile 30-year-old is a non-contract arrival having recently left Premier League Southampton.
He previously had spells with both Leeds United and Charlton Athletic together with a couple of loan stints at Stoke City.
Richardson has totalled almost 300 senior games during his career but won’t be available for the opening game of the season against Leicester City tomorrow afternoon.
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