Harvey Sayer started his football journey as a five-year-old at Bungay Town FC before being scouted by Norwich City, aged eight. He progressed from the Player Development Centre into the elite before gaining a place in the academy. However, he was released by the Canaries at 12 but was scouted by Colchester United, playing for Suffolk County Schools.
Colchester initially wanted to give him a six-week trial but after a couple of weeks, offered him a contract on his 14th birthday in January, 2017. While playing for Colchester, he was scouted by England and in February 2018, played for the Young Lions' under-15 side against Belgium.
He spent some of the 2019/20 season on loan at Maldon and Tiptree, making two appearances.
Sayer, who also had once had a trial at Wolves, scored in Colchester’s first three Under-18s games in the 2020/21 season and impressed for the Under-23s recently. He made his first team debut in the Papa Johns Trophy against West Ham in September 2020 and signed his first professional contract in January 2021/