City have been in impressive form at home so far this season, winning every single match at the Etihad Stadium in the league.
"It's going to be a tough test for us today but it's one we are looking forward to. I'm sure it's going to be a great game for the neutral with two strong sides both looking to get a positive result," Cahill told reporters before the game.
"We've gone about our business quite quietly this season and we've got ourselves into a decent position in the league and if we are on the end of the right result today it would lower the gap between us, but it's not the be all and end all."
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