The Brazilian defender spoke after his team's 2-2 draw against City in the Premier League on Sunday.
The Gunners were down to 10 men for the second half but rallied to avoid defeat.
Post-game, Gunners defender Gabriel warned: "We are waiting for them at our ground."
Asked about an incident when Erling Haaland threw the ball at the back of his head, Gabriel said: "No, I don't remember it. I don't remember it.
"It's normal. But anyway, congratulations to the team for the draw.
"As I said, battle, war, provocation is normal in football and it is part of the game. It's over now. Now we are waiting for them at our ground."
