The current captain is into the final two years of his current deal, prompting fears of a repeat of the Samir Nasri scenario.
"For me being professional means that right up until the last day you are at a club you give 100% to that club," said Wenger. "Today, two days before we play at Marseille, I'm not asking myself whether Van Persie is going to extend his contract in 18 months' time. For me what is important is that he plays well for us on Wednesday. After that the next match.
"That's how I think. He's scored 28 goals in 34games, so they're exceptional statistics. He's got a contract for another 18 months and he's a man who is attached to our club. I'm not especially thinking about losing him."