Mr Cox, a 54-year-old father of three from Dunboyne, Co Meath was injured before the 2018 Champions League semi-final at Anfield.
Three men are currently serving separate jail sentences for the attack.
After almost 18 months of treatment in Ireland, Mr Cox is being transported to a specialist neurological facility in the north of England for an initial 12-week rehabilitation programme focused on developing his speech and movement.
His wife Martina Cox said:
Sean has made progress over the past 18 months but it is extremely slow.
Mr Cox and his family will return to Anfield to watch a Liverpool match in October.
The Support Sean campaign will host a show in January 2020 in the Three Arena, Dublin in order to raise funds for his future care.