Born: January 14th 2001
International: None (eligible to represent England)
A goalkeeper who was previously with Reading, Hillson joined Arsenal initially on loan in 2019 before later making the deal permanent.
Last season Hillson received his first senior call-up as he was on the bench against Slavia Prague in the Europa League.
Hillson was restricted to just three appearances for the U23s across his first two seasons at the club but was given a new contract in January 2021.
The shot-stopper travelled with the first-team to Scotland for pre-season ahead of the 2021/22 campaign.