The family of Yousef Makki will push for a judicial review to quash a coroner's inconclusive verdict into the teenager's fatal stabbing.
Senior South Manchester Coroner Alison Mutch said she could not safely conclude the death was either unlawful or accidental, instead recording a narrative verdict following a seven-day inquest in November.
Yousef's family described the conclusion as 'disgusting' at the time.
