[12] Motherwell stated they would negotiate for a training compensation fee, due to no formal arrangement being in place with MLS in respect of clubs which had developed a young player receiving a payment when they left out of contract.
[16] Cadden started the 2020 season as depth at both the wing and wing-back positions, but was widely considered the successor to 33-year-old Ghanaian Harrison Afful.
In January, it was reported that Cadden would likely leave the club in a bid to gain more playing time; it was noted that his transition to America was made difficult by the COVID-19 pandemic.
[20] On 15 January 2021, Cadden returned home to Scotland, signing for Hibernian on a two-and-a-half-year deal for an undisclosed fee.
[32] The brothers attended Our Lady's High School, Motherwell, one year group ahead of fellow footballer Kieran Tierney.
[33][34] Their father Steve also won a lower division title with Albion Rovers[35][36] and appeared in a Youth Cup final for Motherwell.