It's an incredibly hard start for Unai Emery as the Gunners new chapter starts against a team tipped for more superiority after their exploits last season.
With Nacho Monreal and Sead Kolasinac expected to miss the visit of champions City to Emirates Stadium on Sunday, Welbeck has been trialled as a full-back during training.
Rather than ask his players to eradicate that glory from their minds, as Bill Shankly and Sir Alex Ferguson might have done in order to start again, Guardiola is demanding they remember what made them such sparkling winners.
New signing Stephan Lichsteiner is likely to start at left-back, despite the right being his stronger side, given his experience and Manchester City's tough wingers.
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"The important thing is to be there and to be ourselves".
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Emery also insisted on Friday that Welbeck is not one of the players who would be free to leave before the European transfer window shuts at the end of the month. That's the basic principle.
After all, once they gathered momentum last campaign they were pretty much unstoppable.
In that time, the forward has scored 27 goals and recorded another 14 assists including eight goals and six assists in his debut season.
He said: "I think he'll realise it could have been worse".
However, Emery said Welbeck has shown he can play all over the pitch: "Danny Welbeck is one of the players who has a multi-position possibility". We need four on the top level.
In a competitive squad, where Pep Guardiola has a plethora of options in attack, Bernardo Silva would do very well to fend off teammates Raheem Sterling and David Silva for consistency in the team.