By Darren Lewis ForTrent Alexander-Arnold the sacrifice was worth it. He gave up most of his childhood to become one of the very few who make it to football’s elite level. There were no house parties, no hanging out with friends, no walking home from school, even. Now – with Premier League, Champions League and FA Cup winners’ medals safely stored away at home – the Liverpool and England full-back is reaching out to those that didn’t make it with his After Academy. Over 99% of those signed to aPremier League academy at the age of nine will never have a professional career. After using social m…