The Gunners have already lifted silverware without Sanchez this season after beating Chelsea in the final of the Community Shield last weekend.
Speaking at a news conference at London Colney on Wednesday morning, Wenger said when asked if Sanchez could sign a new Arsenal contract: "All is possible you know". He had the scan two days ago.
He has been linked to Bayern Munich, Manchester City, Chelsea and Paris Saint-Germain, and the latter may well have stolen a march on the potential suitors after the 28-year-old revealed he was actually in the French capital on Sunday. "(PSG) are looking for (Kylian) Mbappe, that's what I read in the papers.
"I have been hesitating because I am the most happy man when I play and I am on the pitch". "He is out for a while, could be two weeks but he will not be available for Stoke".
'Always when I have faced opposition or unhappiness, I try to focus on what I think is important in the game, work harder and question myself, "what can I improve?" I have players coming back who have not played [Mustafi].
Some may disagree with that sentiment and feel Arsenal could do with the addition of the 2015-16 PFA Players' Player of the Year, who has stood out as one of the Foxes' elite stars in recent years.
The reports were echoed by another French journalist, as Bertrand Latour tweeted: "Alexis Sanchez will spend the night in Paris".
All our players got a decent number of minutes of good competition, so overall the squad looks good.
Obviously it will be a huge blow to be without Sanchez for the start of the season but we have even greater concerns to worry about in defence as Per Mertesacker is also a major doubt for Friday's clash.