Erling Haaland won’t be at the World Cup, which means while 17 of his Manchester City team-mates run themselves into the ground in Qatar he can relax, train, and refine his game over a six-week period as stress-free as any he’s likely had in his short career. Somehow, a guy with 18 goals in 13 Premier League games is going to get even better.Is he a cheat code? Is it really fair that the best team in the division should be able to just add the best striker in the world? That question is a little more complicated than it looks, because to add Haala …