Speaking after Sanchez scored twice in Arsenal's 3-2 win over Crystal Palace on Thursday night, Wenger said: "I am not fearful but as you said that will be a subject that arises because of his contractual situation".
At a time when there are still doubts about Wenger's abilities despite his remarkable longevity - in overseeing his 810th Premier League fixture the Frenchman equalled the record of Sir Alex Ferguson - his team displayed so numerous traits he inspires.
Arsenal will be looking to return to winning ways when they take on their London rivals Crystal Palace in the Premier League tonight.
Wilfried Zaha was Palace's most threatening player throughout the first half with the Ivorian maintaining the form that has seen him linked with a number of top clubs this season.More news: No.1 Mi Fan Sale: Xiaomi offers top deals on smartphones, accessories
At that point Palace were in the ascendancy but Sanchez's quick double soon killed off the home side's hopes.
Arsenal looked unrecognisable to the team that dominated the first period, but a moment of brilliance from Sanchez restored their lead.
Six minutes later, Arsenal would have been two up but for Speroni who produced an excellent, one-handed reaction save after Ozil had latched onto Sanchez's superbly weighted through ball.
Palace piled pressure on towards the end, with Zaha heading a glorious chance wide and substitute Bakary Sako shooting well over from just inside the area. Crystal Palace had been undefeated in its last eight games and, though it next hosts Manchester City, it again demonstrates it can survive by often resisting Arsenal and going level.