Caleb became a Cardiff City Academy player at the age of 11. Hughes signed his first professional contract in October 2020, and has now signed a new deal as he steps up to play regularly for the U21 side.

A regular starter for the U18 side in the opening months of the 2021/22 campaign, in January 2022 Caleb joined Cymru Premier side Haverfordwest County on loan for the remainder of their season.