Manchester City are one point behind Arsenal but it still lacks one more game in addition to the two last rounds so a total of 9 points comparing to gunners which only could collect 6 points.
Manchester City really needs Haaland in his best form. He can achieve some wins for Manchester City, where he can be a deciding factor. His ability to score goals is unprecedented and Manchester City's players are well adviced to search him, to give him scoring attempts and Haaland will likely convert to goals for Manchester City, which Manchester City really needs in such a tight battle.
I believe Haaland will be a deciding factor for Premier League.
Haaland is a gifted finisher. He's hardly the sole reason City dominates. I know Haaland's goals are showy, but De Bruyne, Foden, and Alvarez are creating the plays and space for him. Teamwork and system make City dangerous, not simply one player scoring. They stand while Haaland is off. Their strategies change to win. Good teams are more than their components. While Haaland is a great player, its the teamwork and individual brilliance that maintain Manchester City at the top of the Premier League.