Wabara limped off during the closing stages of the 2-2 home draw with Nottingham Forest last Saturday and later that evening put pictures of a badly swollen big toe on his Twitter account. Paul Quinn, who has made just one start for Rovers this season, is on standby to fill in for the on-loan Manchester City right-back.
Harry Forrester has suffered an injury setback and could be out for another six weeks. The midfielder has been blighted by an ankle injury since joining Paul Dickov's side from Brentford in the summer and now he has suffered a tear to his quad.
Marc de Val Fernandez has stepped up his recovery from a knee ligament injury but he is yet to return to full training.