Wenger, whose side are sixth in the Premier League table, confirmed before kick-off at Dean Court that he remained unsure on Sanchez's future.
So, when it emerged Sanchez has been left out of the squad, United supporters were quick to express their excitement on Twitter...
United manager Jose Mourinho said Friday that Sanchez was a "phenomenal player", adding: "What we believe is, there are some players in the football world (that) if you have the chance to sign them in January, March or July, you have to try".
When asked if Sanchez had a preferred destination, the Arsenal manager said that he has no idea if the Chilean prefers a move to Man City or Man Utd. "He [Sanchez] is being vague at the moment".
Chelsea running on empty, admits Conte
Despite David Luiz being on the bench, Antonio Conte chose Andreas Christensen as the man to replace the England worldwide . Chelsea got the better of the Red Devils in their first Premier League meeting of 2017-18, winning 1-0 at Stamford Bridge.
The Arsenal forward finds himself at a transfer tug-of-war between two fierce rivals, with a shock scramble for his signature having been sparked.
Sanchez was only a substitute for Arsenal in its League Cup semifinal match against Chelsea on Wednesday.
Wilshere was anxious to make a good impression on his return to the club where he spent last season on loan while Arsenal were keen to register their first victory since the turn of the year. In the 35th minute, Danny Welbeck's shot was saved by keeper Asmir Begovic but if the Arsenal striker had gone to ground under the challenge of Simon Francis, he may well have won a penalty.