Mikel Arteta continued to back David Raya as the Arsenal goalkeeper faces criticism for his most recent error between the sticks, with the Gunners boss fielding questions ahead of his side's trip to Aston Villa on Saturday.
Arsenal take on an Aston Villa side on a 14-game winning run at home, breaking their own record from over a century before, having beaten Manchester City 1-0 on Wednesday night.
The Gunners came back from 3-2 down to beat Luton 4-3 in the 97th minute of the game, after Raya had twice let in soft goals for the hosts to take the lead from 2-1 down.