We can only see this game going one way. Arsenal are unbeaten this season and have won 18 of their last 23 league games at the Emirates. Southampton, conversely, remain winless this season.
Over 2.5 goals has occurred in three of Arsenal's last four games in all competitions and three of Southampton's last four in the Premier League, so we're expecting a high-scoring encounter here.
Arsenal have scored three or more goals in three of their last six home games in the league, so we fancy them to put a few past the Saints this weekend. Arsenal 3-0 Southampton.