"I said it many times we were very, very close last year," said Wenger at Upton Park. "We got 83 points and we lost only three games in the whole season. Teams who have got 83 points have been champions.
"Manchester United had a fantastic run in the second part of the season but we dropped a little bit of quality in April.
"That means any weakness will be punished this year too.
"It will be a bit tight again. But I believe it will be interesting as well.