Second man charged over alleged Sydney murder of 28-year-old selling headphones on Facebook

A second man has been charged with murder over the death of a 28-year old man from Sydney's west, who was allegedly killed after meeting up with two men to sell his headphones through Facebook.

The 26-year-old was arrested at a home in Yagoona and taken to Bankstown Police Station, where he will be charged, NSW Police said.

Ross Houllis, who has been described as "the nicest guy in the world", allegedly arranged to meet Sami Hamdach and another man at the Wakeley shops car park on Bulls Road in Wakeley, near Fairfield, on Friday February 14.

He had listed his headphones on the Sydney Marketplace Facebook page.

Mr Hamdach, a 27-year-old father-of-two from Bankstown, is accused of murdering Mr Houllis after demanding cash from him before allegedly dragging Mr Houllis through the car park, knocking him to the ground and assaulting him before leaving in a Toyota Hilux Ute.

Mr Houllis was left unconscious with head injuries on the pavement.

NSW Police said he died in hospital on the following Monday, after suffering a bleed on the brain.

The victim's brother-in-law, Justin Andrew, paid tribute to him, saying Mr Houllis "would do anything for his family".

Mr Andrew spoke as police appealed for help tracking down the second man allegedly involved in the "senseless" attack.

"There's no doubt in my mind the attack on Mr Houllis was deliberate, it was significant, and it was horrific for that man to have to experience," Detective Superintendent Brett McFadden said.

A post on Facebook from January 23 listed "brand new" Apple headphones for sale for $170, saying they "haven't been used ... got them for a gift a while back".