"The official deadline is August 31, but we can create an internal deadline," said Wenger. "The transfer market should stop before the season starts.
"Robin van Persie is a world-class striker. I am a big supporter of him and I have supported him throughout. We took him very young, he has one year left and he's in demand.
"It is our desire to keep him, but we'll do what's in the best interests of the club. If you have a decoder in your head, you can decode that."