The 30-year-old is without a club after leaving Sunderland at the end of last season.
Two broken arms and the knee injury undermined his latter years on Wearside and the ongoing problem with his leg has meant he has been without a club this season.
Scotland goalkeeper Craig Gordon has admitted a knee problem may force him to retire.
The 30-year-old is without a club after leaving Sunderland at the end of last season.
Two broken arms and the knee injury undermined his latter years on Wearside and the ongoing problem with his leg has meant he has been without a club this season.
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