Red Devils have never been afraid to blood their next generation and give them a chance to shine in the first-team.Since the invention of the Premier League in 1992, some 18 teenagers have found the back of the net for the famous Red Devils.Led by the Class of 92 and with the likes of Cristiano Ronaldo and Wayne Rooney playing a major role in their teens, there have been no shortage of success stories.But plenty of others tipped for the top have faded away and peaked early on in their careers at Old Trafford.Here's a run-down of all 18 players to find the net for United in the Premier League before turning 20 and what happened to them after bursting onto the scene.The Premier League had not even been formed when Ryan Giggs first found the.