Arsenal star Alexis Sanchez roars with laughter during training as Arsene Wenger prepares his side for crunch Premier League clash against his potential suitors Manchester City

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Arsenal star Alexis Sanchez appeared happy as he trained with his team-mates ahead of Sunday's Premier League clash with Manchester City.

The Chile international can be a bit of a mystery to Gunners fans as his body language on and off the pitch can be hard to interpret.

But with his contract situation still up in the air and as Arsene Wenger prepares to face the side who tried to sign Sanchez in the summer - and who are still pursuing his signature - Arsenal's main man seemed somewhat content.

Alexis Sanchez laughed hysterically during Arsenal's training session on Saturday afternoon

The Chile international jumped in the air and giggled at his failure to reach an aerial pass

The 28-year-old forward appeared to be in good spirits throughout the entire session

Sanchez even went off for a private one-on-one discussion with manager Arsene Wenger

Wenger and his side trained on Saturday afternoon at their London Colney training base ahead of the crunch tie against City.

The French boss looked on with a watchful eye as his players took part in a small passing drill and a match-situation exercise.

And Sanchez seemingly enjoyed the session as he was snapped hysterically laughing despite his Emirates future still being up in the air.

Midfielder Jack Wilshere also trained and would have been eager to impress Wenger as he looks to get more games under his belt. 

The Gunners boss Wenger looked over the session with a watchful eye as his players trained

Jack Wilshere will be hoping to get some game time against Manchester City on Sunday

Arsenal will be up against it when they travel to the Etihad to take on an in-form City side, who are yet to lose a competitive game this campaign.

But Theo Walcott has seen weaknesses in Pep Guardiola's side and has insisted they have the attacking quality to exploit them at the back.

'It is going to be the biggest test we have faced this season so far,' he told the club website. 

Olivier Giroud laces his extravagant boots before taking part in their training session

Arsenal's players took part in a tight-spaced passing drill at their London Colney facilities

'Everyone needs to be ready, it isn't going to be easy but without doubt we have a chance. We have quality throughout this whole squad. 

'It is very early days still but they seem to score more goals, but defensively I still feel like we can get at them, they will be worried about us. 

'We need to concentrate on their main threats but you can't go into a game being afraid of teams because that is a negative straight away. You need to be positive and we that's how we are feeling.'

Despite a mixed-bag start, Theo Walcott is confident heading into the clash with Man City

Walcott believes they can hurt Pep Guardiola's side with the threat they carry in forward areas