The 27-year-old midfielder missed the Reds 2-0 Barclays Premier League win over Fulham with a neck injury and Benitez is unsure if he will be fit to face the Blues at Anfield.
Benitez said: "I was talking with the physios today (Saturday) and he [Gerrard] is improving but it is still too soon [to say if he will be fit for Chelsea]."
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