Important to emphasise that we are not talking about someone who will blind opponents with skill, nor indeed race past with indecent haste. By the same token, we are not talking merely about a willing work horse, an honest trier who just gets by on a faultless attitude. Son is much more than that. In the first half, the 23 year-old represented the biggest threat to Alan Pardew’s side as he tried to combine with his new team-mates.