A makeshift Manchester United defence did not even have to resort to hair pulls to keep out a goalshy Chelsea. The unfamiliar pairing of Ayden Heaven and Noussair Mazraoui grew into a tepid game after a shaky start, making the full-time boos inevitable. Stamford Bridge was an unhappy place again, the unrest in the stands growing as a fourth consecutive defeat in the Premier League approached, and the only time the home fans stopped pining for the old Chelsea was