The FA Cup winners qualify for the following season's UEFA Europa League (formerly named the UEFA Cup; until 1998 they entered the Cup Winners' Cup instead). This European place applies even if the team is relegated or is not in the English top flight. In the past, if the FA Cup winning team also qualified for the following season's Champions League or Europa League through their league position, then the losing FA Cup finalist was given the Europa League place instead. FA Cup winners enter the Europa League at the group stage. Losing finalists, if they entered the Europa League, began earlier, at the play-off or third qualifying round stage. From the 2015–16 UEFA Europa League season, however, UEFA will not allow the runners-up to qualify for the Europa League through the competition.
what about the FA Cup winner?
FA Cup winners enter the Europa League at the group stage.