Johnson hasn't featured since January 18.
Rodgers said: "We'll be similar to what we were the other night [against Fulham].
"Glen Johnson is working very well. I'm not sure he'll be ready for the game this weekend, but if we can have a good week next week he'll be very close.
"He looks fresher and he looks fitter. That period that he's had out has really helped him. He's in good condition. But there is still a bit to go yet. Daniel Agger is back in the squad and it's as it was really."
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