Walcott insists the only way of overhauling United is by focusing on their own form.
â€śItâ€™s all about the consistency,â€ť he told the Official Arsenal Matchday Programme.
â€śWe canâ€™t worry about United - we just need to win our games to stay in with a shout. The game against them here [at Emirates Stadium] will be a big occasion, I think, and it could come down to that.
"Weâ€™ll just keep plugging away, trying to get those three points every week and exerting as much pressure on them as possible.â€ť