Former Arsenal youth product Billy Vigar, playing for Chichester City FC, has died after suffering a traumatic head injury during a non-league match last week. What happened to Billy Vigar? Former Arsenal youth player Billy Vigar died on Thursday, September 21 after suffering a "significant brain injury," according to his family. "After sustaining a significant brain injury last Saturday, Billy Vigar was put into an induced coma," Vigar's family said in a statement. Billy Vigar joined Arsenal at 14 years old in 2018, scouted from his hometown club Hove Rivervale FC in Worthing.