It feels like Lewis Hall has finally turned the corner as a Newcastle United player. The 19-year-old is finally starting to get more regular minutes in a Newcastle United shirt, having initially struggled after his loan move from Chelsea. That deal included an obligation to buy for £28million if certain conditions were met, and for a long time there were fears that they would not be met. There were theories that the club recognised their mistake, and would not be signing Lewis Hall permanently. But they were only theories. The terms have now been met, meaning Newcastle are obliged to sign Hall…