Rodgers – who has dismissed claims from Birmingham City that Liverpool are in talks over signing England goalkeeper Jack Butland – had been critical of side’s character in the 3-1 defeat at the Britannia in midweek.
And he added: “There’s no question we have players with character but it can’t be on tap.
“You can’t just turn it on when you want and then it goes back off again. It has to be on all the time if you want to progress.
“If a club is playing top dollar for top players, then you have to produce. It’s as simple as that. But the table doesn’t lie.
“My job is to see if we can improve the level of consistency and mentality in the team. But unfortunately you can't cure it all because a lot of it is about character and the types of character you have.”
Liverpool’s current points total of 25 points from 19 games equals their worst such return since the introduction of three points for a win in 1981.
Defeat tomorrow would leave Rodgers with an identical record to the one that saw Roy Hodgson sacked in January 2011.
And when asked to assess the progress of his team, he responded: “It takes time unfortunately. We want to make progress but unfortunately because of the position we're in it's going to be slower progress than what people would want.
“That's the nature of it unfortunately. We just have to have the courage and unity as a club to stay together. I couldn't have asked any more of the supporters.
“Goodness me, we're sat 10th in the league and the reality is that this club should be higher. But we're not. Unfortunately that's the way it is and we aim to improve on that going forward.”
Luis Suarez has shook off an ankle problem and will be available for the trip to Lotus Road, while Jordan Henderson, Joe Allen and Raheem Sterling are all vying for a recall to the starting line-up.
Rodgers may also choose to rotate his defence with Jamie Carragher and Sebastian Coates on standby.
Meanwhile, winger Oussama Assaidi has been named in Morocco's provisional squad for the 2013 Africa Cup of Nations, which will starts in South Africa next month.