Ismail Oulad M'Hand has signed a first pro deal with Arsenal.
The midfielder, 18, followed older brother Salah in committing to the Gunners.
He told the club's website: "I'm very happy, very excited. I'm just proud to sign my first pro contract.
"I like the playing style. It's good and it suits me, so hopefully I can show more of myself.
"I'm a box-to-box midfielder. I'm good in both boxes - defensively and attacking. I have a good shot!"