Championship
When: 19:45 GMT, November 22, 2011
Where: St Andrews Stadium, England
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Ridgewell will be joined on the sidelines by Morgaro Gomis (groin) and fellow midfielder Jordon Mutch (ankle).
Winger Wade Elliott, a substitute against Posh on Saturday, will hope to secure a place in Chris Hughton's starting line-up against his former club.
Ross Wallace faces a late fitness test for Burnley.
Scotland winger Wallace was on a run of three goals in as many games before a hamstring problem forced him to miss the weekend defeat to Leeds.
On-loan Wolves striker Sam Vokes is poised to make his first start for Eddie Howe's men after Charlie Austin suffered a dislocated shoulder on Saturday.
