Inglethorpe told liverpoolfc.com: "What I love about being in the Academy is that every year there is a lesson for you.
"Dannsy (Jayden Danns) was a good one for me this year. Last year (he) starts off and couldn't get in the U18s. This year (he) starts off really well in the U18s but couldn't get in the U21s.
"It wasn't until a little bit later; I remember phoning Pep (Lijnders) and saying I think you need to have a little look because there's something there.
"He trained for a bit and then three weeks later just after the cup final Pep texted me and said, 'When you wanted me to have a look, is that what you meant?'
"It's gone from three weeks of training with the first team to playing in a cup final. You just don't know.
"You never know until someone actually steps foot in a stadium full of people with the team. I don't think you ever really know whether someone can play until they're put on the stage and given the opportunity."