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Arsenal defeated Manchester United 1-0 at Old Trafford through a first-half Leandro Trossard tap-in that was nicely assisted by Havertz.

That victory lifted the Gunners one point above City, which has an inferior goal difference of three and play its game in hand at Tottenham on Wednesday (AEST).

Pep Guardiola's side still has the title in its own hands, but dropped points in north London will change that heading into the final round of fixtures, with Arsenal hosting Everton and City at home to West Ham United.

Asked if he is going to back Spurs for the victory against City, Havertz laughed and said: "I am going to be the biggest fan of Tottenham ever. Let's hope for the best."

Arsenal's victory at Old Trafford was its 27th in the Premier League this season - only in 1970-1971 (29) and 1930-1931 (28) has it won more in a single top-flight campaign.

Mikel Arteta's men could reach 89 points with victory over an Everton side with nothing to play for, yet that may still not be enough if City win both remaining fixtures.

Regardless of the result at Tottenham Hotspur Stadium, the Premier League title race will still go down to the final weekend.

"We have one game and we need the whole club behind us - anything is possible," Havertz said.

"We prepared for the game very well, we didn’t have our best game but we needed the three points and we have it now so we can be happy.

"We have to win every single game as City are always keeping the pressure on. It is so nice to be in the [title] race and every week you have to play at your best."

Havertz kept up his impressive form by setting up the only goal for Trossard, who has put Arsenal 1-0 up with three of the past four goals he has netted.

An out-of-sorts United side offered little in an attacking sense, a few David Raya saves from distance aside, in what was a deserved victory for the visitors.

Trossard said: "Man United are still a good team and they can hurt you in different ways so credit to the boys – we defended really well.

"Obviously we only have one objective to win the league. We have done our job today and it will be up to the last game and that is what we are aiming for.

"Hopefully next week we can celebrate something - you never know, it could be. We can only hope. We have done our job and that is the only thing we could have done."