The 18-year-old fell awkwardly during Saturday's 1-0 defeat to Manchester United and underwent tests on Monday to assess the damage.
Sunderland's medical staff originally thought the teenager could face a lengthy period on the sidelines after being stretchered off at Old Trafford but Wickham believes the early signs look positive.
Wickham posted on Twitter: “Scans showing injury not as bad as first thought, waiting to see a knee specialist later in the week.”
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