Offer Cash Settlement for Thai Friend's Non-performing Loan?

Hello, 

I don't have much experience with financing companies in Thailand. 

But in my country if a friend/relative is in financial trouble with a bank or financing company and it is clear that there are no assets and the loan cannot be paid and has been non-performing for a while, I could step in and offer the debtor maybe 30% on the outstanding amount, and probably settle after some negotiations for 30-50% and then he will be debt free. 

I am wondering if I could do the same in Thailand for a friend who has a province court case tomorrow. 

When would be the best time to make a settlement offer?

Before the court case to the adversary's lawyer, after the court case, or maybe even during the court negotiations by giving the settlement offer to my friend's lawyer? 

Anything else I would have to consider? 

I would be happy if people with experience in debt settlements could share their advice.