The Chilean international has enjoyed a superb debut season for the Gunners after trading La Liga giants Barcelona for North London in the summer.
In 21 Premier League starts, he has notched 12 goals and contributed seven assists – earning widespread acclaim from pundits and fans alike.
However, his impressive campaign has hit a slight snag over the past few weeks as an ongoing knee problem has caused him to sit out a couple of matches and hinder his form.
Sanchez is likely to miss the Gunners’ FA Cup clash against Middlesbrough on Sunday, and despite admitting it’s a concern Arsene Wenger remained upbeat that his star player will recover soon.
“He didn't look right on Tuesday night. He got a knock on his knee and he was not feeling himself like he was before. There was not the same intensity as before,” Wenger told the Daily Mail.
“It is (a concern). He wants so much to play. But he still has a problem. It is muscular and should not be a problem. But if he is not available for Sunday he should be okay for the next game.
“If there is any medical risk he will not play. He is the type that you have to hold back. At the moment he has not been out on the pitch but if there is no medical risk I might play him.”
Why Arsene Wenger should rest him on Sunday
Sanchez managed just 68 minutes during the 2-1 victory over Leicester City on Tuesday and there is no denying that he was lacking that explosiveness and high pressure style.
Against Boro on Sunday at the Emirates, there is no need to risk him with the number of attacking options available and the importance of the Gunners’ upcoming fixtures.
With all due respect to the Championship outfit, Wenger’s men should have enough in reserve to get the job done and a fully fit Sanchez is undeniably more important in the race for a top-four finish in the Premier League.