Among all the youngsters loaned out by Manchester United this summer, an England Under 19 international may be in for the most dramatic of culture shocks. Elyh Harrison has grown accustomed to the somewhat sanitised world of academy football. Where coaches appreciate his ball-playing talents and high balls into the penalty area are relatively few and far between. Now, after thriving for Manchester United’s Under 18s and their Under 21s, the challenge facing Harrison is to prove that he can stamp his authority on a very different sort of game. In a very different sort of environment. Chester FC…