However, Gunners fans would be naive to think Alexis isn't keeping one eye on the January transfer window, with the Chilean reportedly eager to complete a move away from the Emirates before the end of the season.
Manchester City remain keen on landing the Gunners star and are said to be preparing a fresh £50million offer for the forward in January, despite Arsene Wenger's insistence that neither Sanchez or fellow contract rebel Mesut Ozil will be sold in the New Year.
Manchester United have been linked with a potential move to sign the German midfielder in the January transfer window or perhaps for nothing next summer.
Arsenal go into the European clash on the back of their 3-1 defeat by Manchester United and Wenger will be hoping his side bounce back quickly ahead of their Premier League encounter against Southampton at St Mary's on Sunday.
"It's great news for Arsenal that they've returned to form". "Who knows if they still want to leave?"
Sanchez came close to joining City on deadline day, but Arsenal's failure to sign Thomas Lemar as his replacement ultimately ended the deal.
The World Cup victor added: "The Gunners showed huge passion on Saturday and they need to hold onto that mentality moving forward".
"But, if they do, they need to show the same commitment to help Arsenal to a Champions League spot".
"Arsenal will definitely make the top four if they keep that level of performance up".
"If City lose at United and then Spurs, it could be wide open again".
Arsenal now sit fifth in the English top flight on 28 points from 15 matches, one point behind fourth-placed Liverpool.