The Gunners were 3-0 up inside 13 minutes and led 5-0 at half-time against the league's bottom side.   Martin Odegaard, Gabriel Martinelli, Kai Havertz, Declan Rice and Ben White scored - with an own goal from Jayden Bogle - for Mikel Arteta's team.   The win ensures Cheap Arsenal Football Shirts move two points behind leaders Liverpool.   It keeps the Gunners in the...