The ?9million man has struggled since returning early from Scotland duty last month with the problem, and was an unused substitute for last weekend's 2-0 Barclays Premier League defeat at Everton as Simon Mignolet took over.
Manager Steve Bruce said today: 'Craig Gordon is not 100 per cent fit, I have to report that. He's going to see a specialist on Monday.
Knee problems: Craig Gordon of Sunderland will see a specialist in Sweden about his injury
'He came back from Scotland with a knee injury and it has been niggling away at him. He's away to see a specialist in Sweden on Monday and we will see how he is.'
Striker Danny Welbeck has returned to training following his long-term knee injury and could be included in the squad for Saturday's trip to Arsenal.
Both he and Fraizer Campbell, who has also been a long-term absentee with a knee problem, are expected to play in a behind-closed-doors friendly next week.
Back from injury: Sunderland's Danny Welbeck
Bruce said: 'Danny Welbeck is training today with Fraizer Campbell. Welbeck, if he comes through the next two days, could be involved on Saturday.
'We have got a game against West Ham on Tuesday here and I expect Fraizer and Danny both to be playing in that.'
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Explore more:People: Steve Bruce, Craig Gordon, Danny Welbeck Places: Scotland