Before the international break, Arsenal blew away Manchester United in an incredible 3-0 win.

Louis van Gaal’s side were three goals down within 20 minutes, but Arsène Wenger knows his team must avoid complacency as they return to Premier League action.

A trip to newly-promoted Watford may well inspire over confidence, but the Frenchman knows the task at hand will not be a simple one.

“We play against Watford who have conceded only one goal at home and defend very well,” Wenger said in Thursday’s pre-match press conference. “They are a very difficult team to play against so we have to focus to get a positive result on Saturday.”

The impressive Southampton and Swansea sides have both visited Vicarage Road this season and come away without scoring, as have West Brom. The Swans went 1-0 down with half an hour to play, but played 25 minutes against 10 men and still failed to equalise. With Odion Ighalo and Troy Deeney at the other end of the pitch, Watford have every chance of winning any game they keep a clean sheet in.

In their last home game, they lost 1-0 to Crystal Palace. The only home goal the Hornets have conceded this season came from the penalty spot. New manager Quique Sanchez Flores is clearly doing a lot right with his side.

“He has done extremely well,” Wenger said. “I have met him [before]. He has adapted very quickly.

“They have a good link with Udinese and Granada, so the owners of Watford have a good knowledge of European football and they always make good decisions.”

Arsenal will have to overcome that and break the trend on Saturday, as the Gunners want all three points. Complacency can’t be afforded as the team could find themselves five points behind Manchester City by the time Saturday’s late kick-off is underway.