Chelsea sack boss Liam Rosenior amid historic losing run    ESPN Club statement: Liam Rosenior | News | Official Site    Chelsea official site Liam Rosenior sacked by Chelsea after five successive Premier League defeats - The Athletic    The New York Times Calum McFarlane: The 'tactical obsessive' who has been thrown in at the deep end at Chelsea again    Sky Sports Inside Liam Rosenior's Chelsea reign: Respecting the ball and losing the dressing room    BBC