Granit Xhaka has questioned Arsenal's mentality in the wake of their 10th Premier League defeat of the season at Aston Villa on Tuesday.
Trezeguet's first-half strike was enough to give Villa a 1-0 home victory against Arsenal, who suffered a hangover of sorts after last week's wins over Liverpool and Manchester City.
Mikel Arteta's men defeated the newly-crowned champions of England before knocking City out of the FA Cup, but failed to reach the same heights at Villa Park.
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The result leaves Arsenal languishing down in 10th in the table after 37 fixtures, meaning they are now destined to finish outside of the top six for the first time in 25 years.