The Warriors are currently in third place, one point behind Saints, and they realistically must also beat Racing 92 back at Scotstoun in the final round to progress to the quarter-finals.
But first things first and Jones, who will start on the wing at Franklin's Gardens, is expecting his side to put in an improved performance in England.
"There is a lot of motivation to go down there and get a result as they came up to us and got a result," Jones told The Scotsman. "We are in a position to qualify for the quarter-finals which has not been done before so there is extra motivation.
"They [Northampton] build their game on the set piece. We have had a good look at them today and they pride themselves on their scrum and line-out.
"When we are at our best we play great attacking rugby. Our ruck speed was not where we wanted it to be in the last game so if we can generate quick ball it will allow us to attack."
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