Not exactly. has AFL background
Wikipedia
Mills was born in Sydney and grew up on the Northern Beaches. His grandfather, Ray Mills, played Australian rules football for the Perth Football Club in the West Australian Football League (WAFL) and represented Western Australia through the 1960s.[1] Callum was an avid Sydney Swans supporter as a child and idolised Swans' forward Tony Lockett.[2] He began playing Australian rules football at the age of four through the Auskick junior program, but gave the game away at seven years of age to play rugby union with his school friends.[3] In 2010, aged 13, Mills was approached by then-Sydney Swans chairmanAndrew Pridham to fill in for the Mosman Swans junior Australian rules football team. He impressed enough to be placed in the Sydney Swans talent academy later that year and gave up rugby union. Mills later revealed the Swans' academy was the major influence in his decision to play Australian rules football instead of rugby union when he was a teenager.[4] He won the under 16's best and fairest at fourteen years of age for the Mosman Swans and he was ultimately named club champion in 2012. In 2014–15, he was cleared to play in the TAC Cup competition as a member of the NSW/ACT Rams and during this period he also played four games for North Shore in the premier division of the Sydney AFL competition.
Wikipedia
Mills was born in Sydney and grew up on the Northern Beaches. His grandfather, Ray Mills, played Australian rules football for the Perth Football Club in the West Australian Football League (WAFL) and represented Western Australia through the 1960s.[1] Callum was an avid Sydney Swans supporter as a child and idolised Swans' forward Tony Lockett.[2] He began playing Australian rules football at the age of four through the Auskick junior program, but gave the game away at seven years of age to play rugby union with his school friends.[3] In 2010, aged 13, Mills was approached by then-Sydney Swans chairmanAndrew Pridham to fill in for the Mosman Swans junior Australian rules football team. He impressed enough to be placed in the Sydney Swans talent academy later that year and gave up rugby union. Mills later revealed the Swans' academy was the major influence in his decision to play Australian rules football instead of rugby union when he was a teenager.[4] He won the under 16's best and fairest at fourteen years of age for the Mosman Swans and he was ultimately named club champion in 2012. In 2014–15, he was cleared to play in the TAC Cup competition as a member of the NSW/ACT Rams and during this period he also played four games for North Shore in the premier division of the Sydney AFL competition.