David Raya kept a clean sheet as he made his Arsenal debut in a behind-closed-doors friendly on Thursday.
The 27-year-old completed his loan switch to the Gunners earlier this week on a £3m fee, with the option to buy the Spaniard for a further £27m.
Raya will compete for the No 1 spot alongside Aaron Ramsdale, with Mikel Arteta warning earlier on Thursday that the keeper's jersey is up for grabs.
Arsenal played Luton in a pre-season friendly at London Colney, in a game which took place over three 30-minute periods.