He made his début for Widnes on 10 April 2015 against the Warrington Wolves, and signed a full-time contract with the club two weeks later.

[3] On 9 October 2021, Whitley played for Catalans Dragons in their 2021 Super League Grand Final defeat against St.

[4] On 14 October 2023, Whitley played in Catalans 2023 Super League Grand Final loss against Wigan.

[5] On 18 October 2023, Whitley signed a two-year deal to join his boyhood club St Helens.

[7] Whitley played 20 matches for St Helens in the 2024 Super League season which saw the club finish sixth on the table.