By Ewan Murray A new era begins for England this Saturday as they take to the field for the first time without Gareth Southgate since 2016. The former Three Lions boss departed after leading the nation to another European Championship final over the summer, but defeat to Spain has seen former Under-21s boss Lee Carsley replace him in the Wembley dugout for the time being. Carsley begins his reign – however long or short – with a clash against the Republic of Ireland on Saturday in League B of the UEFA Nations League. England were relegated from League A back in 2022/23 after a dismal campaign …