Liverpool icon John Aldridge admits he's yet to be won over by French striker David Ngog.

In his column for the Liverpool Echo, Aldridge wrote: "Rafa Benitez works with him every day, so he clearly sees things in him, but at the Emirates Stadium Ngog looked like a schoolboy playing in an adult's match.

"One thing you cannot fault him for his effort; he never stopped running or trying his hardest to help the team and, for that, he should be commended.

"Unfortunately, though, in contests of great magnitude against the likes of Arsenal, Chelsea and Manchester United, effort alone is not good enough.

"You need to have a clear head and be ruthless when opportunity knocks but, when Steven Gerrard sent him skipping through, Ngog was neither and Liverpool suffered accordingly.

"Put it this way - had Fernando Torres been presented with the same chance, you would have invested your mortgage on him scoring; when Ngog was homing in on goal, he never convinced that he would score.

"In my opinion, Dirk Kuyt should have started up front at The Emirates because he is vastly experienced and has scored a few goals recently but Rafa likes playing him in that role on the right."