Johnson on Thursday was charged with three offences of sexual activity with a child under 16 and one of grooming.
Although Advocaat had suggested on Friday Johnson would be in the squad if the midfielder felt "okay", he was absent from the Black Cats' 18-man party when the teams were announced on Saturday.
And asked about that after the game, Advocaat said: "He did not train for three days so I thought it was better for him to stay away."
Then asked about the prospect of Johnson being selected in upcoming matches, the manager said: "Let's wait and see what will happen in the next few days."
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