The German has not played for Mikel Arteta's side since March last year and has just six months left on his contract at the Emirates.
A record 18 positive tests for Covid-19 among players and staff were detected in the weekly round of testing in the Premier League.
Meanwhile, Arsenal have eased fears of being dragged into a relegation battle with a stunning 3-1 win over Chelsea, as Manchester United's Premier League title challenge stumbled after they conceded a late equaliser to draw at Leicester.
City ensured it will be a miserable Christmas for beleaguered Arsenal boss Arteta by condemning his side to a fourth defeat in their last six games in all competitions.
Chelsea's second string returned to the top of Premier League 2 after coming back from 2-0 down on 17 minutes to win 3-2 with three second-half goals.
Tottenham Hotspur return to the top of the Premier League as they draw 0-0 with Chelsea while Arsenal suffer their fifth defeat in 10 matches.
Arsenal beat Irish team Dundalk, which prepared for their biggest game in recent memory, making Arsenal top of Group B on six points and Dundalk at bottom with no points.
Manchester City Football Club had not conceded five goals in a home game since 2003 against Arsenal and it was the first time their boss Pep Guardiola saw a side he is managing concede five in what was his 686th game in the dugout.
Aubameyang's decision to stay with Arsenal will be a major boost to manager Mikel Arteta who said he wanted to build the squad around the Gabon international after they won the FA Cup last month.
Seven months after leaving Pep Guardiola's side, Mikel Arteta outwitted his mentor to ensure his first season as Arsenal manager will end with an FA Cup final.
Former Chelsea and Arsenal goalkeeper Petr Cech, who has played the drums with the Czech band Eddie Stoilow on several occasions, said he never planned his music future.
Arsenal Head coach Mikel Arteta has tested positive for the coronavirus, forcing the club to close its training complex and put the entire first-team in self-isolation.
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