Hull, meanwhile, are in 13th place, which at first glance looks like they're in that safe zone of "not relegated and not in Europe, so nothing to play for", but then you see that they're only six points off the relegation zone with four games to play, with a game in hand over a few of the bottom teams. So they definitely have something to play for on Sunday, apart from the whole "FA Cup preview" angle even.
It's simple. Arsenal need to win. Playing for a point isn't good enough. Everton play Manchester United, so there's not a lot of room for Arsenal errors. Three more points, please.