College Corinthians and Ireland Under-15 international Adam Idah played for Norwich's Under-16s in their 4-1 win over Ipswich in the Hospital Cup at Portman Road on 20th April 2017. Adam scored one of Norwich's goals with Jaden Thompson-Brissett scoring a hat-trick.
He played for Ireland in the UEFA Under-17 finals in May 2017 and was identified as being one of the players of the season.
On 21st July 2017, Norwich announced Adam's signing as a first year Academy Scholar.Norwich's Head of Academy Recruitment Gregg Broughton said “Idah is a centre-forward and was a regular playing up a year for Ireland U17s last season, scoring eight goals in 10 games. "
He played for Norwich in the Foyle Cup in Northern Ireland in July 2017, helping the Canaries reach the final before losing 1-0 to Kildrum.
On 30th June 2018, he signed his first professional contract with Norwich
Idah was called up to the Irish Under-21 squad in March 2019 and scored twice on his debut in a 3-0 win over Luxembourg on 24th March 2019. Idah played for Ireland in the Toulon Tournament in June 2019, reaching the semi-finals before losing to Brazil.