LONDON, July 16 (Reuters) - England's lack of up-and-coming footballers is a serious concern for the national team, former striker Michael Owen said, blaming changes in social behaviour. "Nobody comes home from school, knocks on 10 doors and asks if they fancy a kickabout. I used to run home from school to get my ball," Owen said at a training day in Wales for young players. "If you look to where the best young players are coming from they tend to be from countries where football is seen as a way out, an escape. ... More...