"We know we're losing ground. We're already eight points behind Manchester United," pointed out the Reds' goalkeeper.
"That's too many points at this stage - and we dropped another two points against Blackburn in our last Premiership match.
"We have to keep going and fighting for everything. But if they win on Sunday, it'll be 11 points between us and that could be too much.
"We have to go there and win. We know it won't be easy.
But we have to react in the right way to our recent results in the Premiership and win this very important game."