"It undermines the whole process if he thinks he can pay me off," Liew told the Herald on Sunday. Liew said he was concerned police would drop the case if he accepted payment from Dahlberg.
"It's not about the money. To be throwing cash in another person's face and try and pay them while he was running away ... It's a big sum of money but still, my first priority is that he goes through the justice system."
Liew said he would seek legal advice on potential reparation if Dahlberg was convicted. He was treated for post traumatic stress disorder.
Laurence Wong, who was less seriously injured in the incident which involved three men, said it was well-known in Singapore that expatriate residents would pay out local people to avoid the criminal and civil justice systems.
"We believe a crime needs to be paid by serving time and be given the cane," Wong said.
"I don't want his money, I want him to know how serious our courts are. I will not accept a cent from him, even if it is 10 million bucks.
"He is a coward for running away."
Bill Dahlberg, who is in Singapore with his son, said it would be inappropriate to comment further until the court process was complete.
