Mikel Arteta confirmed this while speaking in his pre-match press conference ahead of the game against the Bees. According to the Premier League law states that a player cannot face his parent club while on loan.
This means that Aaron Ramsdale will be in goal for the Gunners, he will be hoping for a fantastic performance when he stays in between the goalpost against Brentford. The England international has not played a league game for Arsenal since September 3, 2023, which was against Manchester United.