 On 31 August 2016, Henry signed for Championship club Brentford for an initial fee of £1.5m on a five-year contract, rising to £5 million.The transfer reunited Henry with former Walsall manager Dean Smith and the fee made him the Bees' record transfer fee paid for a teenager.He underwent surgery on the dislocated shoulder on 8 September and after returning to fitness, he made his first Brentford appearance on 21 February 2017, with a start in a 2–1 victory over Sheffield Wednesday.