The post-Liam Rosenior era begins for Chelsea on Sunday when they take on Leeds United at Wembley, battling for a place in the FA Cup final. After seven defeats from eight games, culminating in an embarrassing 3–0 defeat at Brighton & Hove Albion midweek, Rosenior was unceremoniously fired —Calum McFarlane, for the second time this campaign, appointed interim manager, this time until the end of the season. The 40-year-old, a relative unknown to many , is tasked with steadying a sinking ship and navigating it to the FA Cup final this weekend, although injuries have already thrown up numerous selection headaches for him. Injury Blows Left, Right and Center for Blues Cole Palmer missed the Brighton humiliation. | Izzy Poles/AMA/Getty Images Chelsea ’s miserable period has been exacerbated by several injury blows. Estêvão is out for the remainder of the season with a hamstring tear and could miss the World Cup , while Cole Palmer and João Pedro have both missed recent matches due to knocks.…