Arsenal’s Hale End Academy is thriving, and the under-21 side got their season off to the best possible start with a 4-2 victory over Manchester United. There is already some bad blood between the two academy sides following Chido Obi-Martin’s shock move to Man United after a record-breaking season for the Arsenal under-18s. Nevertheless, the Hale End Academy still possesses a lot of top talent beyond the striker, and there are other Arsenal youngsters who will now step up. Several academy starlets impressed in the first-team during pre-season, with Ethan Nwaneri the standout, but the midfield…