Although Wenger insisted several times that Sanchez would not be sold, he confirmed that the forward would miss Friday's Premier League clash at home to Leicester besides a trip to Stoke the following weekend.
With Arsenal failing to qualify for this season's UEFA Champions League, Sanchez, who was Arsenal's top scorer in the league with 24 goals last season, has been heavily linked with a move away from The Emirates although Wenger has repeatedly said this offseason that the Chile global is not for sale.
"He has a little abdominal strain that he caught on Sunday morning in training before he came to Wembley (for last Sunday's Community Shield)", Wenger said.
It would therefore appear that one more season with Arsenal and a free transfer next summer to the club of his choosing is now the most likely outcome for Sanchez. His initial return to training was delayed by three days, with Arsenal citing an illness, and now he is injured. Personally I think he is a hugely talented player, he's on the way up and he will continue to move up because the potential is there.
Arsenal manager Arsene Wenger is hopeful of persuading Alexis Sanchez to sign a new contract as he believes Paris Saint-Germain have turned their attention to Monaco star Kylian Mbappe.
Chelsea have reportedly stepped up their interest in Chamberlain as the Blues are desperate for a new addition.
Asked to sum up Sanchez's state, Wenger replied: "Focused".
The Premier League's longest-serving manager also touched upon his indecision regarding extending his Arsenal contract last season, suggesting it created an unease amongst his players.
"I have players coming back who have not played, like [Shkodran] Mustafi".