Journalist James McNicholas was impressed by how Kai Havertz looked to have improved one aspect of his game as Arsenal beat Sheffield United. Kai Havertz picked up a goal and an assist as Arsenal thrashed Sheffield United 6-0 on Monday evening. The German was tasked with leading the line against the Blades, and did an excellent job of spearheading the attack. He linked up well with his teammates, used his physicality to good effect, and caused chaos in the hosts’ backline with his clever runs and movement off the ball. The 24-year-old grabbed an assist in the second half, when he set up Ben Wh…