22-year-old Lavaun Witter was fatally stabbed in the leg with a Samurai sword after four men broke into a flat in Wisbeach Road.
They slashed through an internal door to get to Lavaun, who had barricaded himself in with two men and a 16-year-old boy.
Lavaun and the 16-year-old managed to run away from the scene but Lavaun collapsed a short distance away.
Two men, Julian Russell and Tyreece Wolfries- Parkins, were found guilty of murder and Alex Pasley was convicted of manslaughter in July.
24-year-old Tyreece Riggon has now been found guilty of attempted GBH.
Sentencing will take place in January.
Alex Pasley
Julian Russell
Tyreece Riggon
Tyreece Wolfries-Parkin
Lavaun Witter
