Brentford have signed midfielder Josh Dasilva on a four-year contract with the option of a further year.
The 19-year-old was a free agent after recently opting to leave Arsenal, who will be entitled to a compensation fee as he was offered a new deal and turned it down.
DaSilva, an England Under-20 international, made three senior appearances for Arsenal, all in the League Cup in 2017.
Bees head coach Dean Smith said: “He is an excellent footballer with a great personality.”