Sonny Carey was named as part of Norwich's Under 10s squad in 2010/11 and the Under-13s in 2013/14. He
played for theUnder-14s in a tournament in Woudenberg. near Utrecht in June 2014. He was listed by Soccerway website as being on the fringes of the Under-18 sqaud in 2016-17
After departing Norwich, he trialled with Cambridge and Oxfor as well as playing for the English Colleges FA national team in 2018/19. He has also been part of Norwich's Community Sports Foundation (CSF) shadow squad, who are coached by Linnets midfielder Ryan Jarvis.
On 1st June 2019, he signed for Kings Lynn Town. Linnets director of football Robbie Back added: "Sonny is a player who we have been keeping tabs on for the last year. He is an exciting talent and has a great future ahead of him. We are delighted to bring him to the football club."