At twenty, under a large amount of pressure, always completely compared to one of the best striker to ever grace the green of Stamford Bridge, and you judge him on that? What do you expect? Some hero story where he is the supero hero? No, this is real life, and this kind of things sadly happen in football. If you judge him on one kick of the ball rather then the season he had at West Brom, where he outscored all of the goalscorers of this club, then i am sorry then you expect too much in the wrong moment. He isn't going to be a superstar over night, without minutes or these moments, he will learn and grow as a person and a player.