Marli Salmon, Louie Copley and Josh Nichols aren’t with the Arsenal U19 squad for today’s game against Club Brugge.
The trio all trained with the first-team yesterday.
Defender Salmon, 16, received his first competitive senior callup last weekend as he was an unused substitute away to Aston Villa in the Premier League.
19-year-old midfielder Copley captains Arsenal’s U21 team and travelled with the senior squad in pre-season while he was also the extra man against Brighton in the Carabao Cup.
Full-back Nichols, 19, made his senior debut against Bolton Wanderers in the Carabao Cup last season.
Left-back Marcell Washington, 18, also trained with the first-team yesterday but isn’t registered to play in the Champions League due to the length of time that he has been at the club.
It isn’t yet confirmed whether Salmon, Copley and Nichols will be with the first-team today for the Champions League game against Club Brugge.