Phil Babb believes Liverpool till have a weakness in their rearguard.
Despite an impressive record of goals conceded this season, the Reds were breached twice as they lost 2-1 to Manchester City at the Etihad.
And Reds legend Babb believes Dejan Lovren is the problem player within the team.
The former Liverpool defender told Sky Sports: "To say that Aguero specifically targeted him, I am not so sure.
"But, if you look across that back line, you would probably say the weakest link is Dejan Lovren - and that proved to be [the case], pretty much last night.
"He had a sketchy game at best. Some of his distribution was poor, [the] decision making.
"Even towards the end, when Liverpool were pushing forwards and (Virgil) Van Dijk was up, he (Lovren) was playing straight balls into the box - and you would probably say you need to angle them, so there is a better chance for the second ball and the knock down.
"But what do you say about Sergio Aguero? He is genuinely a world-class striker and a great asset for City."