Wenger does not believe securing the title so early should play a major part in how United will approach tomorrow's showdown.
"I expect them to come and try and play their game and win, like they always do when they come to the Emirates," he said.
"We can only focus on our own performance. We are on a very strong run in the last 10 games and we have a good level of confidence.
"We have a great desire and it is a good opportunity to show for us that we have moved forward in this league since we played them last time at Old Trafford, which I think we have."