The man, who is reportedly related to a 20-year-old man arrested and charged with assault earlier, would appear alongside the younger man in Christchurch District Court on April 4.
The full impact of Ryder's head injuries will not be known until he is out of the coma, though he did give a 'thumbs up' to his family and manager this morning.
Speaking on behalf of Jesse Ryder's family this afternoon, New Zealand Cricket Players' Association chief executive Heath Mills said Ryder was in a stable condition in intensive care.
"He has been responsive and has been interacting with his family and the medical team. Jesse is still in an induced coma and still needing support with breathing following an injury to his lungs.
"In terms of a head injury, it cannot be fully determined at this stage what the effects of a knock to Jesse's head are. We will know more once he comes out of the coma."
Police were still appealing to witnesses to come forward.
The 20-year-old man was found through information from a taxi company and the other man was identified separately by police, Detective Senior Sergeant Brian Archer said.
Ryder's manager, Aaron Klee, thanked all the people who had sent messages of support.
He said Ryder's family had not focused on the police investigation but were concentrating on Ryder.
There had been numerous messages of support, including from international cricket players, which had been read to the injured cricketer.
Ryder's mother Heather and his partner Ally put out a statement today in which they thanked ambulance staff who treated Ryder at the scene as well as Christchurch Hospital staff for looking after him since.
"Also, Aaron Klee and Heath Mills who have been there for us and Jesse at this extremely difficult time. Many thanks to New Zealand Cricket and Cricket Wellington for their ongoing support,'' they said.
"Our families and friends who have constantly kept in touch offering their love, support, and kind messages. Thank you to the Christchurch police for the great work in bringing the people responsible for the heinous crime committed on our Jesse. Jesse will be chuffed knowing how many people care and have reached out, including the huge number of cricket fans and players from around the world.
"We have read many of the messages online over the past 24 hours and we are keeping them for Jesse to read when he recovers.''
They asked for privacy as they focused on getting Jesse better.
Ryder is still fighting for his life in in Christchurch Hospital after the brutal assault in which his alleged attackers kicked him while he was lying on the ground.
The attack came after he had been enjoying a few quiet drinks with Wellington Firebirds teammates on Wednesday night.
When he went to leave Aikmans bar in Merivale about 12.30am yesterday, he was attacked by at least two men, police said yesterday.
- Additional reporting Bevan Hurley of the Herald on Sunday
