The County fan wouldn't need to press charges; if the Police have evidence of an offence being committed then they can proceed without the victim's consent. Given the amount of cameras in that ground, they'll have had all the evidence they needed to make an informed decision.

The fact they charged the County fan with intent to cause fear of unlawful violence clearly demonstrates that they believe McClean may have felt a fear of unlawful violence towards him. It's (painfully) obvious why the County fan was charged and McClean was not.

I can see your point you're making, but it's absolute nonsense; your opinion on the matter is irrelevant when there's a documented chain of events that has led to one of the two parties involved in the incident to be charged with an offence and that person not being James McClean.