Those negotiations have yet to resume, and a source says that Turkish reports claiming Arsenal had held "positive" talks with Ozil's agent were incorrect.
"In our situation, we have envisaged every solution".
"I always said that the fact that we didn't find an agreement a year ago doesn't mean that the player will necessarily leave - because both players look happy here", he said.
"It is my understanding [that he wants to stay]", Wenger said.
"Both players looked happy here and overall I hope the situation can be turned around".
Alves and Sanchez were on opposite sides in Sao Paulo on Tuesday night (10 October) as a 3-0 win for already-qualified Brazil over Chile - plus a late equaliser from Peru's Paolo Guerrero against Colombia - saw the reigning Copa America champions miss out on qualification for their third successive World Cup. It was a very physical game.
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Sanchez was expected to leave Arsenal in the summer and, though a deadline day switch to Manchester City appeared close, the Gunners stood firm with their stance of retaining their prized asset.
"Mentally, I will have to assess the situation when he comes back tomorrow (Friday)".
Asked if he was anxious about Sanchez's mental state, Wenger said: "I will have to speak to him".
The Germany global is expected to be available against Watford on Saturday, however, although it's unlikely that Wenger will put him straight back into the starting line-up.
Indeed, he's not only one of Arsenal's only world-class talents, he's among the best players in the Premier League.
Wenger said that the midfielder will get more games soon, and does not have to leave Arsenal to be in contention for England.