My personal opinion is that Manchester United is just not stable enough as a team right now. They have brought in some new players who are yet to get set with the team. I know that arsenal has also brought in some players. But Manchester United did definitely gamble with the transfer that they had made. And of course the homeground advantage is going to be with Arsenal.
But even though I am saying that Arsenal is going to win the match, Arsenal should definitely not underestimate Manchester United. Which I don't think arsenal is going to do anyway, but that is one reason why Arsenal might lose. They cannot take things easy at all against Manchester United, who has definitely been showing some good performance recently. Manchester United does look to be improving.
Manchester United is seriously shaking this season and if they don't get serious with the whole situation then they might end up in the same situation as Chelsea last season, Manchester's united attack is seriously very weak which is affecting the performance of the club, but is not only about, buying players the probability of that player to give you what you want, and even arsenal is not to doing well this season and Arteta seriously needs to adjust in term of strategy, manchester city is already on its way to do what they know how to do best which is to win and what surprises me the most is that the fact that other clubs don't want to win or what is wrong with all the money spent.
If you say that Man United is gambling by buying players, then it's not correct to say it's stable, right? because if it is stable then the choice must be right and not arbitrary. In my opinion, so far Man United is clearly still far from stable if you look at their performance at the start of the season, they stumbled when they lost to Tottenham, where Tottenham should have been even more unstable after losing their mainstay striker. Man United still has the same striker and even added that Mason Mount should be better than last season. In fact not, now they have lost Varane and Luke Shaw due to injuries which are needed to withstand Arsenal's attacks next week. In terms of squad depth, Arsenal and Man United are now much different, the advantage remains with The Gunner, who will make a big loss if Man United loses for the second time.
In the Manchester United case am still wondering where the problem is coming from Is it from the players that were newly purchased or what? last season Manchester United's performance was super impressive, It was a multi-flipp between Newcastle and United and I feel Newcastle will even leave Manchester United behind, I know the game that shocked everyone was when Tottenham won two zeros, nobody expected it, that is football doh expect anything to happen, maybe manchester united needed some time to adjust and start delivering, and facing arsenal is not going to be an easy challenge.