*Club domestic league appearances and goals, correct as of 00:05, 7 April 2024 (UTC) ‡ National team caps and goals, correct as of 13:06, 16 October 2019 (UTC)
In July 2017, Slattery signed a three-year professional contract with Southampton.[2] Slattery was named in the starting eleven of the first team on 5 January 2019 in the FA Cup third round against Derby County at Pride Park.[3]
On 14 January 2021, Slattery joined League One side Gillingham on loan for the remainder of the 2020–21 season.[5] He made his first appearance for the club two days later in a 1–0 victory against Accrington Stanley.[6]
Motherwell
On 24 July 2021, Slattery joined Motherwell on a three-year contract for an undisclosed fee.[7]
Slattery was arrested by police in November 2021 after an incident in the city centre of Glasgow where he used threatening and abusive behaviour and uttering homophobic remarks. He reportedly assaulted a police officer during the matter. In October 2022, Slattery appeared at Glasgow Sheriff Court and admitted two charges of behaving in a threatening or abusive manner, with one aggravated by prejudice related to sexual orientation. He was subsequently convicted and fined £1,350.[9]
Career statistics
As of match played 23 May 2024
Appearances and goals by club, season and competition