By Philip O'Connor STOCKHOLM, March 29 (Reuters) - When Swedish midfielder Bojan Djordjic told his new Manchester United team mates in 1999 that he had left Europe's biggest club to move to Old Trafford, few of them had even heard of Brommapojkarna. However, boasting more than 270 youth teams and 4,000 players, the team from the Stockholm suburb of Bromma suggest they are exactly that. "What they specialise in is youth players," the 31-year-old Djordjic told Reuters at the top-flight club's Grimsta ground. "They know they don't have to bring them all the way through to their first team. ... More...