Of Bougherra, their statement added: "The medical department are slightly happier with his condition, but he has no chance of playing this weekend and is unlikely for the following weekend either."
Bougherra has been Rangers' outstanding player this season, while the Glasgow side also rely heavily on the experience in midfield of Mendes, who arrived from English Premier League outfit Portsmouth for £3m in August 2008.
Hibs, who presently sit third in the table, would take over at the top of the SPL on Saturday should they win at Ibrox, with second-top Celtic not playing until the following day.
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