Arsenal's hopes in the FA Cup suffered a significant blow when Leandro Trossard was forced to leave the field due to injury during the team's clash with Mansfield Town. The incident occurred in the first half of the match, raising concerns for manager Mikel Arteta as Trossard appeared to be in distress, particularly with an issue around his left leg. The injury came as additional pressure on the team's lineup which has already faced injuries this season.

As Trossard was treated on the pitch, it became clear that he would not be able to continue, leading to a tactical shift for Arsenal. Arteta opted to replace Trossard with Piero Hincapie, which resulted in a change in formation. This marked a departure from their initial setup, which featured wing-backs with Gabriel Martinelli and Noni Madueke. The adjustment indicates Arteta’s quick response to the unfolding situation, as he sought to maintain a solid defensive and attacking presence on the field despite the setback.

The implications of Trossard's injury extend beyond just this match, as Arsenal has been grappling with injuries to several key players this season. The club will need to assess the severity of the injury to determine his potential absence in future matches, which could hinder their performance in both the FA Cup and their league campaigns. As Arsenal pushes for success this season, the toll of injuries may test the depth of their squad and Arteta's tactical adaptability.