By Toby Cudworth Erik ten Hag has brushed off reports that he’ll be sacked by Manchester United after the FA Cup final and insists he’s fully focused on winning the game against rivals Manchester City. Reports on Thursday claimed that United have already decided to part ways with United no matter the outcome of Saturday’s clash at Wembley, following a turgid, injury-ravaged season that saw the Red Devils record their lowest-ever Premier League finish. Kieran McKenna, Mauricio Pochettino, Thomas Tuchel and Thomas Frank are thought to be on a four-strong shortlist of potential replacements, with…