Old Trafford is the next test for Unai Emery’s exciting Arsenal side after their stunning win over Tottenham on Sunday.

The Gunners have only beaten Manchester United once in their own backyard in the Premier League since they won the title there in 2002, and even now they will not go there as favourites despite their 19-game unbeaten run.

Crucially, though, Arsenal will believe they can win this time. Their players will be full of confidence – and so they should be with the form they are in.

‘Arsenal’s players enjoy playing for their manager – United’s don’t’

There are actually some similarities between Emery’s approach and that of United boss Jose Mourinho, who has also dropped big-name players and changed his formation to try to get his team firing.

Emery is the only one of the two getting results at the moment, though, and the two teams appear to be heading in opposite directions.

The biggest difference is the Arsenal players seem to be enjoying playing for their manager.

It doesn’t look to me as if the United players particularly like playing for Mourinho, and that is being shown in their performances.

Why? Well, he has been in charge since the summer of 2016 but when I watch United I don’t see a pattern of play or a system their players can identify with.

I know they have had some injuries and Mourinho has had to change his team around but so has every other club, including Arsenal, and they have managed it.

The Gunners had a tricky start to the season and lost their first two games, against Manchester City and Chelsea, but it is incredible the way they have bounced back to stay undefeated since then.

Emery, who has only been at the club since May, deserves huge credit and he is squeezing every bit of ability out of his team, in every department.

We saw at United when Sir Alex Ferguson left how difficult it is to replace a manager who has been at a club for such a long period of time, but Emery has got the club back on an even keel already after replacing Arsene Wenger.

Since Emery arrived they have had a habit of turning games around in the second half and they did it yet again against Spurs.

That in itself comes from the manager, not just in the way his players keep going because they are fit and mentally tough, but because of the way he changes things when they are not working.

He did it brilliantly on Sunday. Alex Iwobi and Henrikh Mkhitaryan were ineffective in the first half so he brought on Aaron Ramsey and Alexandre Lacazette to stretch play with their runs behind the Spurs defence, and they sparked a brilliant comeback.