Manchester United have a rich history of producing pearl after pearl through their academy, and the next player outside the production line looks to be midfielder James Garner.The 20-year-old, who has managed seven games for United's first team before, has signed a new long-term contract at Old Trafford and dropped out for a second period on loan with Championship side Nottingham Forest.His stock will only continue to rise, so it's time to get to know him a little better.Garner is not known for his defense / Marc Atkins /…