Gabriel Martinelli was captured walking round the Emirates pitch in a protective boot after the 3-0 defeat to Brighton & Hove Albion this evening.
Martinelli was substituted inside the opening 20 minutes with what looked like a suspected ankle injury. The Brazilian was replaced by Leandro Trossard on the left but the Belgian endured a torrid afternoon facing his former side for the first time since his £27 million move in January.
The Gunners' medical team had been keeping an eye on Martinelli just minutes before he was withdrawn after he gave them a 'thumbs up' when trying to sprint. Martinelli received treatment a few minutes earlier following a strong challenge from Arsenal target Moises Caicedo, with the 21-year-old's ankle appearing to get trapped underneath the sliding leg of the Ecuadorian.