People across the country have so far raised more than £395,000 in aid of Zac, who has a rare form of childhood leukaemia called Near Haploid.
The condition requires specialist treatment unavailable on the NHS and Zac’s family need to raise half a million pounds by the second week in November to get the youngster to Philadelphia Children’s Hospital in America for his care.
Bully recently met the Broseley youngster, and the club’s record goal scorer handed Zac his very own Wolves shirt.
Putting out a plea to Wolves fans to get behind Zac’s fundraising campaign, Bull said: “It was the first time meeting him and he's a lovely little lad. He's got this terrible illness, it's pulled on my heartstrings.
“If everybody who donated got to meet him, they'd realise this money is going to a lovely little lad.
“We want to get something out there to also Wolves supporters, pledge a pound, get Zac to America as soon as possible. Chuck a quid in, go online to see what you can do and get this boy sorted.”
Anyone who wants to back the fundraising campaign can donate online here.
People can also join the Facebook page by searching 'Zachariah's's fight against Acute Lymphoblastic Leukaemia', as well as donate using mobile phones by texting ZACH75 £1 to 70070.
On Sunday, an entire festival in his name – Zacfest – was held at Telford Town Park, while music mogul Simon Cowell has pledged to donate £50,000 towards Zac’s cause.
Photograph courtesy of Express & Star.
