Stamford Bridge Chelsea 1 Burnley 1 Liam Rosenior is beginning to discover the margins for error apply not just to players but for head coaches. Even those who have made a reasonably good start to life at Chelsea. Failure to see off relegation-threatened Burnley has revealed lapses in concentration around his squad. An early goal by Joao Pedro should have been the precursor to a satisfactory afternoon all round in west London. Basic sustenance. Instead, for all Chelsea’s poss