Brentford have completed the signing of teenager Dominic Thompson from Arsenal.
The 19-year-old left-back has signed a three-year contract with the option of a further year.
Bees boss Thomas Frank told the club website: “Dominic is a very talented young player and over the past two years the speed of his development has increased.
“He is a technically very good left-back or left wing-back. He can pass the ball well and deliver good crosses and he also has a very good mentality and wants to defend.”