With the current performance of Manchester United this season in the Premier League, Manchester United can't beat Arsenal at Old Trafford. Arsenal will not want to drop another point in the Premier League because it will affect them in the race for this season's Premier League title. Arsenal has already made the same mistake they made last season that cost them the Premier League when Aston Villa defeated them at Emirate Stadium.
Man United and Chelsea might indeed be difficult opponents in the remaining matches that Arsenal will face this season. Man United probably wouldn't be a big obstacle if Man United didn't play well. But the problem is that if Man United suddenly plays with their true performance then Arsenal will definitely have difficulties. Because Ten Hag's team is inconsistent but they are still a strong team when they play with high confidence. Likewise with Chelsea, which sometimes surprises us. But I still believe that Arsenal will be able to win the match against Man United or the match against Chelsea tomorrow.