At 17 years old, Yarran gained selection into the Swan Districts senior team, where he played thirteen games and kicked thirty-nine goals, including seven on debut and eight in three finals matches.
At draft time, Carlton coach Brett Ratten said that Yarran could assist fellow small forward Eddie Betts and help to reduce the defensive pressure on then full-forward Brendan Fevola.
He was released from his contract the next day after a mutual decision that he was unable to meet the demands of league football as a result of ongoing mental-health issues.
[18] Yarran featured in the award-winning 2010 documentary film, Three Boys Dreaming, which followed the lives of him and two other young Indigenous Australian footballers over a four-year period from ages 14 to 18.
[19] In May 2019, Yarran was sentenced to five years in jail after stealing cars, attacking police and members of the public while under the influence of methamphetamine.