Trey George joined Cardiff City FC Academy at the age of eight during the pre-Academy years.

Hailing from Merthyr, George has versatility to his game with an ability to play out wide, centrally or as an attacking midfielder. He signed his first professional contract in July 2024.

George made his First Team debut in a Vertu Trophy fixture against Arsenal U21 in November 2025. He marked the occasion by scoring the third goal in a 3-1 victory, finding the net on his debut.