The 27-year-old Brazilian left-back ruptured his Achilles tendon during a Champions League tie against Dutch outfit PSV Eindhoven in April.
Benitez told the club´s website www.liverpoolfc.tv: "Fabio isn´t fit. It could be another month before he recovers. We knew it would be a long time when he got injured. He is improving, but it is not easy when you have this kind of injury."
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