Having drawn the first leg at St James' Park 0-0, Pardew concedes that Metalist could be regarded as slight favourites, but the fact a score draw at will send the Magpies into the draw is a cause for optimism.
He said: "We have come here to qualify. I think it is 50-50.
"The fact they did not score has given us a slight advantage but, of course, they are at home.
"Our game-plan is to score goals tomorrow."