Mikel Arteta is facing a major concern over the fitness of Gabriel Magalhães ahead of Arsenal’s Premier League meeting with Crystal Palace.

The Brazilian defender, who has been a key figure in Arsenal’s solid backline this season, is now a serious doubt for Sunday’s fixture.

Magalhães found the back of the net in Arsenal’s midweek win over Atlético Madrid, but the joy was short-lived as he picked up an issue that forced him off.

His absence would be a huge blow to Arteta’s plans, especially as the Gunners look to continue their impressive form at the top of the table.

Speaking during his pre-match press conference, Arteta gave an update on the defender’s condition, saying, “Not much, obviously big Gabi had to leave the pitch with an issue, and he hasn’t been able to train yet, so let’s see how he evolves in the next 24 hours, whether he’s available or not for the weekend.”

The Arsenal manager’s comments suggest that the club will assess Magalhães closer to the match, with his availability depending on how he responds to treatment.

Arteta has relied heavily on the Brazilian’s leadership and strength in defence, and losing him, even temporarily, could...