Scoring a goal for England is what most schoolchildren dream of when they're emulating their heroes on the playground. For those lucky enough to become professional footballers, representing their nation is the pinnacle of their career. But unfortunately for some players, running out in the white of the Three Lions doesn’t always go to plan. With the European Championships just a few months away, some players are already guaranteed to be in Gareth Southgate's squad. There are still plenty of…