The Liverpool boss is also hopeful of having Fernando Torres back in two weeks, slightly less than originally thought.
Benitez said: "It is the same problem as before with Fernando. Hopefully he can be fit in two weeks.
"We thought he was ready for the Arsenal game and during the match I asked him two or three times if he was okay because clearly he wasn't fit. He is not the sort of player who normally gets injuries and that's the reason he didn't feel what he had. That was the problem.
"Javier is okay. He trained today and so we've had good luck with him."
Meanwhile, Daniel Agger, who hasn't featured since Portsmouth on September 15, is still 10-16 days away from a return following a metatarsal break.
Benitez added: "He is continuing to progress but with this kind of injury he needs time. I think we need to wait another 10-16 days."
Liverpool are still waiting news on Xabi Alonso, who is due to see a specialist today.