On 30th June 2018, it was announced that centre-half Andrew Omibamidele had signed a contract to be an Academy Scholar, playing for the Under-18s. He was previously with Irish side Leixlip United. whom he joined as an Under-9
In March 2019, he played the full 90 minutes for Ireland's Under-17s in a 2-1 defeat to Finland
He was called up to the Republic of Ireland Under-18s in September 2019 for a tournament in Sweden.
On 2nd December, he signed his first professional contract with Norwich. “It’s an amazing feeling, it’s what I came to England to do, work hard and try get my first professional contract and it’s came so I’m very excited, ready to go again. I definitely worked hard to be where I am. I don’t think age really matters, I think once you’re able to play at a level, age doesn’t change anything. I have been working really hard, trying to string performances together and all stuff surrounding that.”
Andrew was on the bench for Norwich in the Carabao (League) Cup first round clash at Luton on 5th September 2020 which Norwich lost 3-1. The Canaries had 15 first teamers missing due to international call-ups with a further two injured. However he was not utilised. Three days later he played as Norwich's Under-23s defeated Plymouth 3-2 at Home Park in the Football League Trophy.
Following the departures of fellow centre-backs Ben Godfrey and Timm Klose in early October 2020, it was reported that Norwich were considering fast-tracking Omobamidele to the first team. He didn't do his chances any harm when impressing in Norwich's Under-23s 5-0 thrashing of Newport County in the EFL Trophy on 6th October 2020, in which he captained the City side. Norwich's injury crisis in November 2020 saw Andrew on the bench for Norwich's clash with Coventry City on 28th November 2020.
He signed a new contract with Norwich on 23rd December 2020 which will extend his stay at Norwich to 2024 even though he hadn't played for the first team (but had been on the bench for eight games at the time of his signing).
He made his Norwich City debut as a late substitute in the 2-1 win at Cardiff City on 16th January 2021 in the Championship.