Mosquera’s injury deepens a defensive crisis that has been quietly building for Arsenal, despite the club’s impressive start to the campaign. Prior to Wednesday’s setback, injuries to Gabriel and Saliba had already forced Arteta to lean heavily on his new summer signing, who had settled quickly into Premier League football. Losing him during a demanding fixture schedule places additional strain on a back line that has been reshuffled repeatedly since August.
Arteta acknowledged the seriousness of the situation when addressing the media, noting that Mosquera’s issue is “more complicated” and requires further medical analysis compared to Declan Rice's injury. “Well, let’s see. We have another training session in the afternoon. Every hour is going to be very important to see the availability of the players. After that, we’ll decide which ones,” Arteta said.
Arteta added: “That’s [Mosquera] the more complicated one, but again, we have another test today to see where we are with them. We need to know, because the feeling that we had after the game and yesterday, we need to corroborate with what happens with all the testing that we do today.”