I have been charged with section 47 ABH what will happen to me?

During a 5 a side game of football I was playing in goal and I had the ball in two hands and one the opposition come right through the back of me for no reason so I reacted my pushing him in the back of the head. The ref sent me off for raising my hands and give the other player a yellow card for the first offence. When off the pitch the kid was raging and cursing me then he come towards me looking like he was going to hit me so I rugby style handed him off (open hand with keeper gloves on) in the face and broke his nose. I thought nothing more of it but I got arrested a few weeks later, the police said that the kid can hardly breathe because of his injuries yet since the week after the incident he has played football twice a week at the centre! The police just told me I might as well take a caution but if I get a criminal record I will not be able to carry on coaching kids rugby league and I’ll lose my job, ironically we do work supporting the ministry of justice!! I returned to the police station and got charged with Section 47 ABH and due in court on the 7th of July. I’m devastated by this because I have never been in any trouble with the police before and I’m not an aggressive person at all. What do you think will happen to me?? Someone said that if my solicitor gets all of our evidence sorted it might get dropped before it goes to court? I’m worried!