Adaramola joined Palace at Under-12s level, after his mother made the decision to move to London from Dublin to improve his chances of making it as a professional footballer. After five months without a team – including trials at Charlton and West Ham – her faith was paid off when Adaramola signed for Palace.
As well as signing professional terms in 2020, he was called up to represent Ireland at Under-17s level. His performances for the Under-18s in 2020/21 saw him called up to Shaun Derry’s Under-23s squad – he made his first appearance at Selhurst Park in their crucial 3-2 victory over Middlesbrough.
The following season Adaramola began to train with the first-team under Patrick Vieira, and earned his senior debut in the final minutes of an FA Cup win over Hartlepool United.