Sanchez and Arsenal are all smiles despite Euro blow as Wenger prepares his men for United showdown

Alexis Sanchez looked cheerful during Saturday's training session as Arsenal prepared for Manchester United

Arsenal looked in good spirits as they looked to bounce back from a disappointing defeat by Olympiacos by beating Manchester United on sunday. Arsene Wenger's men were disappointing in Tuesday's defeat, but have a chance to put smiles back on the faces of their fans if they beat United, a result that could see them move above the league leaders in the table.

Theo Walcott, who is in fine goalscoring form, takes on Calum Chambers during the training session

Olivier Giroud, who was suspended for the midweek defeat to Olympiacos, runs with the ball

Under-fire manager Arsene Wenger has received backing from former Arsenal defender Viv Anderson

Chambers grapples with Per Mertesacker, with one of the pair likely to start against United on Sunday

Francis Coquelin (left) and Nacho Monreal share a laugh with assistant manager Steve Bould