"There have been initial talks. I signed a three-year deal initially because I was quite comfortable with that," he explained in the News of the World.
"It was the same when I was a player. I didn't believe in signing too many contract extensions when I had a couple of years to go.
"I am very happy here. I could stay for ten years - but if we lose ten games I'm sure I won't be here."
Chairman Niall Quinn is working as hard as possible to keep Keane on Wearside for the forseeable future and he expects a number of clubs will be sniffing around his, and the Sunderland fans' prized possession.
"Roy is in place for two more years - regardless of whether we win promotion or not," he said.
"Although now is not the time to be thinking about his future, a new deal will be on the agenda."
He declared: "My job as a chairman will come to a point where the vision of the future of the football club is something our manager won't want to leave for someone else.
"We know if we are not looking after Roy properly and we are not providing world-class back-up for him and someone else comes in, then I haven't done my job properly."