James Milner believes Liverpool can cause problems for Champions League favourites Barcelona despite his own forgettable experiences at Camp Nou.
Milner was part of Manuel Pellegrini's Manchester City teams that bowed out at the first knockout stage in 2014 and 2015.
The Reds will face Lionel Messi and his illustrious team-mates at a deeper stage of the competition, having swatted aside Porto to reach the semi-finals, and the 33-year-old believes their playing style under Jurgen Klopp can pose tough questions of any opponent.
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"We can beat Barca but we know it will very tough," Milner told reporters.