There is better news over fellow centre-back Sami Hyypia, who was also forced off on Saturday with what has been confirmed as a broken nose.
He is expected to be able to play against the French club, however, after coming through a training session at Melwood on Sunday.
A Liverpool spokesman told the club's website: "Sami has a broken nose but will be available for the second leg of our Champions League qualifier.
"Jamie underwent a series of investigations on Sunday morning which confirmed he has a broken rib and has also developed a pneumothorax.
"He will continue to be monitored on Sunday but at this stage no further treatment will be required."