Kavan Brisset, aged 21, was stabbed on Langsett Walk, Upperthorpe, at 6.45pm on Tuesday, August 14 and died in hospital four days later.
He was left fighting for life after sufferingÂ a single stab wound to his chest in the attack.
Remembering 'beautiful' and 'amazing' Blake and Tristan Barrass three years on from tragic Sheffield brothers' funeral
EuroMillions: Mystery winner from South Yorkshire has won £79,242.50 on The National Lottery
Sheffield Council employees sacked as fraud increases including theft and excessive internet use during work
Power cut Sheffield: Hundreds of homes in Hillfoot area without power ahead of 28C heatwave today
Sheffield sexual assault: Girl, 13, victim of 'serious' sexual assault in Chapeltown
An 18-year-old man was arrested onÂ suspicion of attempted murder and three boys, two aged 17 and one aged 16, were arrested on suspicion of conspiracy to rob following the stabbing.
They have all been bailed as detectives continue to investigate. Detectives piecing together Kavan's final movements know he was with members of his family about an hour before he was stabbed.
They are still trying to establish why he was in Langsett Walk when violence flared.
Kavan's relatives are said to beÂ '˜utterly devastated'Â atÂ his death.
In a previous appeal for information, Detective Chief Inspector Jude Ashmore, the senior investigating officer, said:Â 'If you're worried about speaking to police, we have mechanisms available and in place to look after you and you can also remain anonymous if you wish.'
Anyone with information should call South Yorkshire Police on 101 and quoteÂ incident number 827 ofÂ AugustÂ
The incident room can be called directÂ on 01709 443458 andÂ Crimestoppers can be contacted,Â anonymously, on 0800 555111.