Those are the ideas of BBC Sport pundit Chris Sutton.
Sanchez began at the bench and he used to be diminished to a 24-minute cameo within the goalless draw away to the Blues 8 days in the past at Stamford Bridge.
The Gunners tackle West Brom this night (8pm), figuring out a win may raise them to 7th within the Premier League desk.
And whilst Sanchez has come underneath complaint from the enthusiasts, Sutton believes he has the ‘X Factor’ and may give his aspect one thing particular within the ultimate 3rd.
“I was surprised that Alexis [Sanchez] was left out by Arsene Wenger against Chelsea last week,” Sutton instructed the Daily Mail.
“After all Arsenal’s stubbornness in refusing to promote the striker, why now not use him?
“But I do not believe Wenger used to be looking to say there is no participant larger than the membership via benching the Chilean.
“The supervisor perhaps felt Sanchez wasn’t on top of things. Still, I can’t see him being omitted against West Brom on Monday evening, in particular with Danny Welbeck out.
“If Arsenal need that X-factor within the ultimate 3rd then Sanchez is their guy.”
Despite tips the Gunners became a nook against Chelsea, Sutton doesn’t assume they are going to be difficult for the identify.
He added: “A goalless draw against Chelsea does not exchange so much and whilst you have a look at Manchester United, City and Chelsea, they will be extra constant than Arsenal.
“The Gunners will have to beat West Brom, however it is difficult to consider them as severe identify contenders.”