Oster spent six years on Wearside after signing from Everton for £1 million in 1999. But he left under a cloud in 2005 following a string of off-field problems when Mick McCarthy was in charge.
"I'll probably get a frosty reception because of the circumstances when I left.
"But it will be great to go up there and put one over on them. It's turned into an important game for both clubs now after the recent results."