In other all-English Premier League matchups in Monday's draw, Crystal Palace host Tottenham, and Manchester City will be at home to Burnley.
Pierre-Emerick Aubameyang wrapped up a routine victory in the 84th minute with his 14th goal of the campaign, leaving him the league's top scorer.
Liverpool are blowing away teams, with this ninth straight win coming three days after a 4-0 victory over Newcastle United.
The Armenia playmaker fractured a metatarsal in Wednesday's 2-0 League Cup quarter-final defeat by neighbour Tottenham.
After losing their last two matches following a 22-game unbeaten streak, Unai Emery's side got back to winning ways.
The bottle was hurled at the Tottenham midfielder about 12 minutes after he scored in the second half of the 2-0 quarterfinal victory.
Dele Alli scored for Tottenham in the 59th minute of the match to help them beat Arsenal for the first time since 2010.
Napoli and Inter Milan will only have to cross the Italian border into neighboring countries for games against Zurich and Rapid Vienna, respectively.
Charlie Austin's 85th-minute goal sealed a 3-2 win for Southampton in the Premier League and a first win in charge for Hasenhuettl.
Lucas Torreira acrobatically volleyed into the bottom left corner in the 83rd minute to score the lone goal.
It was the first United-Arsenal game since 1986 that didn't have either United manager Alex Ferguson or ex-Arsenal coach Arsene Wenger in the dugout. Ferguson was in the stands, however.
Arsenal's board may have a big decision to make in a few weeks, with the midseason transfer window opening on January 1.
The Gunners moved above their London rivals on goal difference into fourth place in the Premier League with 30 points.
Sevilla, which has eclipsed Barcelona and Real Madrid so far this season to lead the way in the Spanish league, suffered a surprise 1-0 loss at Standard Liege in Group J.
The Gunners had drawn their last three league games but Aubameyang's second-half strike was enough to extend their unbeaten run to 17 matches in all competitions.
Son scored his first two goals of the season and another of Tottenham's forgotten men, Fernando Llorente, added one in a 3-1 win over West Ham in an all-Premier League London derby at the Olympic Stadium.
It was also their seventh consecutive league victory and moved them up to fourth place, two points behind leaders Manchester City.
After an exciting and thrilling weekend, this is how the English Premier League table stands after Matchday 8.
Spain forward Morata scored his first goal for Sarri's blues since August, and only his second of the season to help Chelsea edge Vidi in the group stage match.
While Arsenal manager Unai Emery's methods are starting to kick in, Everton is surprisingly laboring under its new coach, Marco Silva.
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