Arsenal players can't stop laughing in training [GETTY]
Despite being battered 5-1 by Liverpool at the weekend and losing top spot in the Premier League, the Gunners look in high spirits.
Laurent Koscielny was spotted in the middle of what appears to be a game of hide-and-seek to avoid the rain.
Laurent Koscielny hides from the elements [GETTY]
Bacary Sagna does his best swan impression [GETTY]
Bacary Sagna is seen striking a unique swan pose, while club joker Lukas Podolski is up to his usual antics.
Maybe Arsene Wenger's men have simply forgotten about their Anfield humbling?
Wenger will hope so, after describing the result as an "accident".
Arsene Wenger (right) described Arsenal's defeat to Liverpool as an "accident" [GETTY]
Yaya Sanogo is back in training after injury [GETTY]
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Young striker Yaya Sanogo is back in contention to face United at the Emirates, in what will be an otherwise unchanged squad from the travelling party at Liverpool.
Arsenal have a daunting fixture list ahead of them, with David Moyes' side among 11 key games in just two months for the title contenders.
Here, Express Sport looks at who the Gunners have to come.
February 12 - Manchester United (home) - Premier League February 16 - Liverpool (h) - FA Cup February 19 - Bayern Munich (h) - Champions League February 22 - Sunderland (h) - Premier League March 1 - Stoke (away) - Premier League March 8 - Swansea (h) - Premier League March 11 - Bayern Munich (a) - Champions League March 16 - Tottenham (a) - Premier League March 22 - Chelsea (a) - Premier League March 29 - Man City (h) - Premier League April 5 - Everton (a) - Premier League
Bearing that testing schedule in mind, they are certainly doing a good job of putting on a brave face!