Great potential? To do what exactly, to become an average Championship striker perhaps?
To become a decent Premier League striker.
So when has he shown this potential?
Scoring goals for the reserves in plentyful (I know, but he has the ability), scoring 1 in 2 in average (12 games, 6 goals) for England under 19, and some very promising matches from the bench, especially the one against Liverpool. He has the ability. Now he needs to get his head together, grow up and gain some confidence. Confidence on the pitch that is.