The Chile international netted a second-half brace at Selhurst Park this week to underline his value to the Gunners, who are expected to lose the forward to Premier League rivals Manchester City.
REPORT: Sanchez sees Arsenal past Palace
Suggestions of a move away from the Emirates Stadium were further fuelled after only four outfield players joined Sanchez in celebrating his eventual winner against the Eagles, hinting at a divide amongst the club’s players.
But when asked if he felt there was a split in the group, Wenger told Sky Sports: "No, not at all. I did not see that.
"I am not fearful [of a bid coming in], but that is a subject that will turn up because of his contract situation.
"I have said that many times since the start of the season so I can only repeat what I have said."