[5] Greenslade signed his first professional contract with the club in May 2022 having been invited to train with the first-team for the last few weeks of the previous season.
[6] On 30 August 2022, Greenslade made his senior debut for Bristol Rovers from the bench in a 1–1 EFL Trophy draw with Plymouth Argyle, missing a penalty in the subsequent shootout defeat.
[7] On 6 September 2022, Greenslade joined National League South club Chippenham Town on loan until January 2023.
[16] On 3 February 2024, Greenslade joined National League side Oxford City on loan until the end of the season.
[20] Greenslade's twin sister, Lily, is also a footballer who plays for Rugby Borough having also featured previously for Bristol City and England U15, U16 and U18.