Midfield has been an issue for Newcastle United all season. While Lewis Miley’s rapid-fire ascension into a genuine first-team player at Newcastle has been stunning to watch, it has papered over the cracks somewhat. Indeed, in an ideal world, a team with realistic hopes of chasing Champions League qualification before a ball was kicked this season would not be having to rely on a teenager so often, as good as he may be. Sandro Tonali’s ban stretching into next season has been a major blow. While the Italian and Bruno Guimaraes had not quite struck up the perfect partnership before his ban, the…