Ljungberg, 25, has undergone intensive treatment on his long-standing Achilles injury in the south of France.
And now he is poised to play his first match since December 21 in the fifth-round Cup showdown at Old Trafford.
Ljungberg's agent Roger Ljung declared: "Freddie is still in pain but it is much, much better now."
The Swede boosted Wenger by coming through an hour of a reserve match against Chelsea at the weekend.
Will Freddie make any difference? All the latest odds on Saturdays match are available at Bet365:
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