Wenger is celebrating 17 years in charge of the Gunners as he takes his side to south Wales, having succeeded Bruce Rioch in September 1996, making him the longest-serving current manager in the Barclays Premier League.
The Dane said: "We will try to spoil his party. We are at home and we really want to go on as we have picked up seven points from our last three league games. We are playing really well so we want to continue that.
"But you never know if that is enough against these big teams as they have players who can change the game in a second.
"Santi Cazorla isn't there but players like Ozil and Wilshere are, and Ramsey has also made a good start to the season. There are players there we have to keep an eye on. Even if we are doing well, in one second they can win the game for Arsenal."
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