The Gunners breathed life into the Champions League campaign with a 2-0 victory over Pep Guardiola’s side after goals from Olivier Giroud and Mesut Ozil.
The north London side have three points thanks to their win against leaders Bayern but remained in fourth place in Group F behind Dynamo Zagreb and Olympiacos.
And outspoken Arsenal supporter Morgan was keen to remind his Twitter followers that there is plenty of work to do if Arsene Wenger’s side want to qualify for the knockout phase.
Brilliant performance by Arsenal last night. But we're still bottom of the group, so let's keep the ticker-tape parade on hold for now. afc
— Piers Morgan (@piersmorgan) October 21, 2015
Arsenal lost 2-1 to Dynamo Zagreb in their Champions League group-stage opener before a 3-2 loss to Greek side Olympiacos at Emirates Stadium earlier this month.
The north Londoners are on a three-game winning streak after beating Manchester United, Watford and Bayern ahead of the visit of Everton at The Emirates on Saturday.
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