Alisson believes Liverpool will come up against the "best team in the world" when they face Manchester City in the FA Cup semi-final.
The Reds still have their sights set on the quadruple but will need to overcome Pep Guardiola's side at Wembley if they want to pull off the feat. It was only six days ago that the two teams last squared off, producing a sensational game as they drew 2-2 at the Etihad.
That result means the destination of the Premier League title is in City's hands, due to the one point lead they hold over Liverpool. The two teams haven't been separated in their two games so far this season and the Reds' goalkeeper knows exactly the type of challenge they will face in London.